Scarlet Nexus Trophy Guide & Roadmap


  • Estimated trophy difficulty: 3/10
  • Approximate amount of time to platinum: 50h
  • Offline Trophies: 53 (42 , 8 , 2 , 1 )
  • Online Trophies: 0 (0 , 0 , 0 )
  • Number of missable trophies: None
  • Glitched trophies: None
  • Does difficulty affect trophies?: No, you can play at any difficulty you want
  • Minimum Playthroughs: 2 and cleanup
  • Welcome, Scarlets! Scarlet Nexus is out, and it's time for another trophy guide. We play as 2 protagonists, Kasaine & Yuito, both OSF soldiers with Psychokinetic powers. You know what that means? It means Control (Alan Wake) meets Astral Chain! Let's break it down how to get towards that platinum! No missables in this game, and difficulty settings doesn't void any trophies. That is neat!

    Step 1 - Finish the game using character of your choice while doing all Character Bond Episodes + Gifts

    No matter what character you use, during the story you will progress through Phases (they are like chapters), in which you will end up in your Homebase towards the end. In there you can read Brain messages (R1 + D-pad Up) and initiate Bond Episodes with you allies (first happens at the end of the Phase 1, when you end up in your base). All of those counts towards some trophy, and since you need them all, you will also need a second playthrough with the other character since some allies are specific to certain protagonist.

    In Phase 3 end, you will unlock Gifts. Gifts are items that can be found in dungeons, or possible to get via Exchange option in the Shop. When you inspect a gift, you can see which character can receive it. When you give a character gift, it gets the checkbox so you know you gave it to him. I advise you to always get all of those when you can, and give them to all characters you can. I had no issues with getting those via Exchange. What you miss, you can use R3 to put them on the Whishlist, so the game will note when you pick up item needed for that one to be crafted.

    30 sidequests are needed for a trophy. You initiate them by talking to NPC's in town, when they have pyramid-like icon above their heads. You can do them in your second playthrough, or combine in both.

    Have in mind that there are a lot of miscelaneus and battle trophies, so use all battle skills you learn often to minimize time needed for them later.

    Step 2 - Finish the game with other character in EX New Game

    When you finish the game, you will be prompted to make a Clear Save game. Loading that one lets you continue playing with that character, so you can clean up, do more sidequest etc. Note that if you overwrite your Clear Save game file, you will have to beat the final boss again to make another one, so I advise you to save to a separate slot.

    Now, you will carry your inventory and level to the new game plus, which makes this much more easy and faster. The stories are different, so take your time. Do everything you did on your first playthrough (Character Bond episodes + Gifts) and you will be close towards getting all trophies.

    Again, when you finish the game, make a separate save slot. When you finish the game with both characters, you can switch between them in your Hideout by loading that clear save game data. That will help you mop up what you still maybe miss at this point.

    Final Step - Clean up what you still miss

    Mop up what you maybe still miss and you are good to go. Overal I don't consider this to be hard as you can play on Easy if you like. Good luck and enjoy!

    Woven Red Threads
    Obtained all trophies.

    Unlock all other trophies to get your platinum!

    Scarlet Guardian
    STORY

    Completed Phase 0.

    Automatic Story Unlock.

    Conclusion of Millenia
    STORY

    Finished the last battle against Karen.

    Automatic Story Unlock.

    To the Unknown Future
    STORY

    Reached the 1st playthrough ending.

    Automatic Story Unlock.

    Collecting Fragments of History
    Started a new game with a different main character after beating the game.

    When you finish the game once, you can make a clear save game file. You can start a new game plus when you load it, so do so, choose different character and you will unlock this trophy.

    Red Strings for Two
    Reached the ending of both Yuito's and Kasane's story.

    For this one you need to finish story with both characters. Finishing it with one unlock new game plus, load it, choose another, finish the game.

    Shared Feelings
    Saw Yuito Bond Episode 5

    Yuito Bond episodes occur while you play as Kasane.

    Usually you can initiate an episode when you end up in your homebase. You can reply to Brain Messages (R1 + D-pad up) or by talking to NPCs there. Some will require you to go through the dungeons and beat some enemies, some will just be simple conversations. If you miss your oportunity during some Phase, they all become available in Phase 11 when you are on standby for end game events.

    Scarlet Nexus - Bond Episodes Guide

    A Line Beyond Time
    Saw Kasane Bond Episode 5

    Kasane Bond episodes occur while you play as Yuito.

    Usually you can initiate an episode when you end up in your homebase. You can reply to Brain Messages (R1 + D-pad up) or by talking to NPCs there. Some will require you to go through the dungeons and beat some enemies, some will just be simple conversations. If you miss your oportunity during some Phase, they all become available in Phase 11 when you are on standby for end game events.

    Scarlet Nexus - Bond Episodes Guide

    To Run Together
    Viewed 'Hanabi Bond Episode 5' in Yuito's story and 'Hanabi Bond Episode 4' In Kasane's story.

    Hanabi Bond episodes occur while you play as Kasane and Yuito. For this one, you need to initiate mentioned episodes with Hanabi during both of your playthroughs.

    Usually you can initiate an episode when you end up in your homebase. You can reply to Brain Messages (R1 + D-pad up) or by talking to NPCs there. Some will require you to go through the dungeons and beat some enemies, some will just be simple conversations. If you miss your oportunity during some Phase, they all become available in Phase 11 when you are on standby for end game events.

    Scarlet Nexus - Bond Episodes Guide

    Life Goes On
    Viewed 'Gemma Bond Episode 5' in Yuito's story and 'Gemma Bond Episode 4' In Kasane's story.

    Gemms Bond episodes occur while you play as Kasane and Yuito. For this one, you need to initiate mentioned episodes with Gemma during both of your playthroughs.

    Usually you can initiate an episode when you end up in your homebase. You can reply to Brain Messages (R1 + D-pad up) or by talking to NPCs there. Some will require you to go through the dungeons and beat some enemies, some will just be simple conversations. If you miss your oportunity during some Phase, they all become available in Phase 11 when you are on standby for end game events.

    Scarlet Nexus - Bond Episodes Guide

    Remaining Pure
    Viewed 'Tsugumi Bond Episode 5' in Yuito's story and 'Tsugumi Bond Episode 4' In Kasane's story.

    Tsugumi Bond episodes occur while you play as Kasane and Yuito. For this one, you need to initiate mentioned episodes with Tsugumi during both of your playthroughs.

    Usually you can initiate an episode when you end up in your homebase. You can reply to Brain Messages (R1 + D-pad up) or by talking to NPCs there. Some will require you to go through the dungeons and beat some enemies, some will just be simple conversations. If you miss your oportunity during some Phase, they all become available in Phase 11 when you are on standby for end game events.

    Scarlet Nexus - Bond Episodes Guide

    Ghost Who Chose Life
    Viewed 'Kagero Bond Episode 4' in Yuito's story and 'Kagero Bond Episode 5' In Kasane's story.

    Kagero Bond episodes occur while you play as Kasane and Yuito. For this one, you need to initiate mentioned episodes with Kagero during both of your playthroughs.

    Usually you can initiate an episode when you end up in your homebase. You can reply to Brain Messages (R1 + D-pad up) or by talking to NPCs there. Some will require you to go through the dungeons and beat some enemies, some will just be simple conversations. If you miss your oportunity during some Phase, they all become available in Phase 11 when you are on standby for end game events.

    Scarlet Nexus - Bond Episodes Guide

    No Need to Go it Alone
    Viewed 'Luka Bond Episode 5' in Yuito's story and 'Luka Bond Episode 4' In Kasane's story.

    Luka Bond episodes occur while you play as Kasane and Yuito. For this one, you need to initiate mentioned episodes with Luka during both of your playthroughs.

    Usually you can initiate an episode when you end up in your homebase. You can reply to Brain Messages (R1 + D-pad up) or by talking to NPCs there. Some will require you to go through the dungeons and beat some enemies, some will just be simple conversations. If you miss your oportunity during some Phase, they all become available in Phase 11 when you are on standby for end game events.

    Scarlet Nexus - Bond Episodes Guide

    The Strength to Simply Exist
    Viewed 'Shiden Bond Episode 4' in Yuito's story and 'Shiden Bond Episode 5' In Kasane's story.

    Shiden Bond episodes occur while you play as Kasane and Yuito. For this one, you need to initiate mentioned episodes with Shiden during both of your playthroughs.

    Usually you can initiate an episode when you end up in your homebase. You can reply to Brain Messages (R1 + D-pad up) or by talking to NPCs there. Some will require you to go through the dungeons and beat some enemies, some will just be simple conversations. If you miss your oportunity during some Phase, they all become available in Phase 11 when you are on standby for end game events.

    Scarlet Nexus - Bond Episodes Guide

    My Past is Me, My Angst is Me
    Viewed 'Kyoka Bond Episode 4' in Yuito's story and 'Kyoka Bond Episode 5' In Kasane's story.

    Kyoka Bond episodes occur while you play as Kasane and Yuito. For this one, you need to initiate mentioned episodes with Kyoka during both of your playthroughs.

    Usually you can initiate an episode when you end up in your homebase. You can reply to Brain Messages (R1 + D-pad up) or by talking to NPCs there. Some will require you to go through the dungeons and beat some enemies, some will just be simple conversations. If you miss your oportunity during some Phase, they all become available in Phase 11 when you are on standby for end game events.

    Scarlet Nexus - Bond Episodes Guide

    Being Wasteful Ain't Bad
    Viewed 'Arashi Bond Episode 4' in Yuito's story and 'Arashi Bond Episode 5' In Kasane's story.

    Arashi Bond episodes occur while you play as Kasane and Yuito. For this one, you need to initiate mentioned episodes with Arashi during both of your playthroughs.

    Usually you can initiate an episode when you end up in your homebase. You can reply to Brain Messages (R1 + D-pad up) or by talking to NPCs there. Some will require you to go through the dungeons and beat some enemies, some will just be simple conversations. If you miss your oportunity during some Phase, they all become available in Phase 11 when you are on standby for end game events.

    Scarlet Nexus - Bond Episodes Guide

    Companionship
    Reached Bond Level 6 with an ally.

    This is unlocked when you reach bond level 65 with any ally.

    You can advance bond levels by bringing that character into battle with you, by doing bond episodes, and by giving the gifts to them (gifts gets unlocked at the end of Phase 3). Giving a gift marked with red heart icon will raise the bond the most. Raising bond level from 5 to 6 takes rougly 2-4 red heart gifts.

    Usually you can initiate an episode when you end up in your homebase. You can reply to Brain Messages (R1 + D-pad up) or by talking to NPCs there. Some will require you to go through the dungeons and beat some enemies, some will just be simple conversations. If you miss your oportunity during some Phase, they all become available in Phase 11 when you are on standby for end game events.

    Scarlet Nexus - Bond Episodes Guide

    Tightly Wound Bond
    Reached Bond Level 6 with all allies.

    This is unlocked when you reach bond level 6 with all allies during either playthrough.

    You can advance bond levels by bringing that character into battle with you, by doing bond episodes, and by giving the gifts to them (gifts gets unlocked at the end of Phase 3). Giving a gift marked with red heart icon will raise the bond the most. Raising bond level from 5 to 6 takes rougly 2-4 red heart gifts. Good time to do this is Phase 11 when you are on standby before going towards end of the game.

    Usually you can initiate an episode when you end up in your homebase. You can reply to Brain Messages (R1 + D-pad up) or by talking to NPCs there. Some will require you to go through the dungeons and beat some enemies, some will just be simple conversations. If you miss your oportunity during some Phase, they all become available in Phase 11 when you are on standby for end game events.

    Scarlet Nexus - Bond Episodes Guide

    Gifts
    Gave a gift to an ally for the first time. *Does not include add-ons.

    Gifts are unlocked at the end of Phase 3. You can get them by collecting green items inside dungeons, or you can get them all by using the Exchange option in the Shop. Phase 11 is when you can get them all there, which makes it the best moment to buy them all and give them all to your allies. 

    You can check when you exchange them to whom you already gave that gift, or who can receive it. That makes is easy to track it. If you miss items for some, press R3 when inside the shop to put it on the Whishlist. When you gather items, the game will pop a note saying you can now craft it. To check what you miss, you can find enemy list inside the Library from the menu and check the drops and locations. Getting Environment items are specific to areas named like that, so you can warp there and collect (D-pad up to fast-travel).

    You need to give all the gifts in both playthroughs, they differ in each, but for this one, simply give the first gift and it will unlock.

    Gift-Giving Freak
    Gave all gifts to all allies. *Does not include add-ons.

    Gifts are unlocked at the end of Phase 3. You can get them by collecting green items inside dungeons, or you can get them all by using the Exchange option in the Shop. Phase 11 is when you can get them all there, which makes it the best moment to buy them all and give them all to your allies. 

    You can check when you exchange them to whom you already gave that gift, or who can receive it. That makes is easy to track it. If you miss items for some, press R3 when inside the shop to put it on the Whishlist. When you gather items, the game will pop a note saying you can now craft it. To check what you miss, you can find enemy list inside the Library from the menu and check the drops and locations. Getting Environment items are specific to areas named like that, so you can warp there and collect (D-pad up to fast-travel).

    You need to give all the gifts in both playthroughs, they differ in each.

    Kins Millionaire
    Collected over 200 thousand kins.

    Kins is currency in this game. You need 200000 at one time, so you can save up towards the end of the game, where you should easily reach that number. My advice is to save up the money and just exchange whatever you need, it's free that way. Last dungeon itself will grant you around 100k, so aim to combine that will saving up until that point.

    The Place Beyond the Pain
    Used the SAS over 100 times.

    SAS are the special abilities that you can initiate by pressing R1 + X/Square/Triangle/Circle when having allies in your party in battles. As you will probably use these borrowed powers from them often, this should happen naturaly.

    Master of the Psionic Space
    Finished off 50 enemies with the Brain Field.

    Brain Field is unlocked during Phase 4 of the story. To active it, you will have to press L3 + R3 while in Brain Drive mode.

    You will be transfered to another alternate area where you need to finish of 50 enemies (not at once, you can combine this in multiple Brain Field activations).

    Other Nemesis
    Used the Brain Crush on Others 20 times.

    You get the opportunity to use Brain Crush (L2) when you stagger an enemy (when you deplete its yellow bar bellow the health bar). Do this 20 times and that unlocks it. It happened during Phase 2 for me, very easy one.

    Power of Observation
    Successfully performed 20 perfect dodges.

    Perfect dodge is pulled of by pressing Circle button in moment when an enemy is about to hit you with its attack. You will know that you pulled it of as you will be in slowed motion for few seconds. Do this 20 times to unlock the trophy. Another easy one.

    Mighty Soldier
    Defeated 1,000 enemies.

    If you don't defeat 1000 enemies during your first playthrough, you will for sure continue with this in your second (in new game plus), where you will for sure unlock it. If by some change you don't, repeat some dungeons to gather your numbers (you can fast-travel in any moment, which makes it really easy).

    One Lost in Madness
    Ran out of time in brain field.

    As mentioned, Brain Field is unlocked during Phase 4 of the story. You activate it by pressing L3 + R3 while in Brain Drive mode. 

    After tutorial about this ability, next time you initiate it, make sure you saved nearby, initiate it, wait for the timer to reach 0 and you will die + unlock the trophy.

    Seasoned Psychokinesis User
    Performed 50 successful Special Object Follow-Up Attacks.

    Special Object follow-ups are when you use your L2 psycho powers. During this timeframe, keep holding L2 and you will be prompted to do some sequence to pull-off this attack, which is a follow-up, and you need to do this 50 times. Not hard, but keep doing this as you play.

    Receiver of Protection
    Initiated Assault Visions 20 times.

    This is an ability unlocked when you reach Bond Level 4 with any of your allies. The prompt to activate will appear randomly, when it does, press triangle + circle to active it. You need to activate it 20 times for the trophy.

    Power of Nexus
    Activated 4 different Combo Visions in 1 combo.

    You will unlock combo visions when you reach bond level 3 with an ally. As description says, you need 4 allies with bond level 3, and then you need to activate those combo visions (L1 + ally button) in a battle. You will need 60% of their SAS gauge to initate a combo vision attack, so time your moment.

    Expanded Brain Functionality
    Learned all the skills in one of the Brain Map categories.

    You can access Brain Map from the menu, and you can spend your earned Bond Points to level up your skills there. Related Brain Map trophies requires you to unlock ALL skills there, for which you will need to reach level 80. Finishing the game will let you carry your progress into the next one, which also means you will carry all brain points you used/earned during the first playthrough.

    If you don't reach level 80 when you finish the second run, simply repeat the last dungeon until you do. It shouldn't be a big problem to unlock all brain map related trophies (to unlock all brain skills).

    Owner of an Excellent Brain
    GRIND

    Learned all the skills on the Brain Map.

    You can access Brain Map from the menu, and you can spend your earned Bond Points to level up your skills there. Related Brain Map trophies requires you to unlock ALL skills there, for which you will need to reach level 80. Finishing the game will let you carry your progress into the next one, which also means you will carry all brain points you used/earned during the first playthrough.

    Using this method, you will reach needed level (80) to unlock all Brain Map Skills in about 2 hours tops. Probably this will be your last trophy.

    0:01 - Finish the game. Load your clear game save data and stock up on Brain Field Gears. Learn all EXP Up Brain Field skills on your Brain Map
    0:10 - Vine Yawn Analysis. Teleport to Sumeragi Tomb, Memories of Impasse, defeat the first set of enemies, save. Second part has Vine Yawns, defeat them using Brain Field. If you don't get the material, load and retry
    1:50 - Combat Experience Assist & System Double Edged Sword. Exchange in the Shop. You can't stack them, so only 1 is needed
    2:27 - Brain Field Gears Strategy. Use one, destroy all enemies, preferably while in Brain Field mode. You will get almost 100k EXP in about 1 and a half minute or less. Teleport to your Hideout and repeat

    Protect!
    Stopped in front of the OSF poster in the hideout.

    The OSF poster will appear in your hideout (homebase) after Arashi joins. That happens in Phase 4 when you play as Kasane, or Phase 9 when you play as Yuito. Enter the gym area, stand in front of the Arashi poster and wait until the trophy pops (10-15 seconds).

    Knowledge of the Past
    Collected all Mysterious Text Data.

    Mysterious Text Data collectibles are found in the Old OSF Hospital area where you will end up during Phase 7 of the story (only during Yuito's story!). You will know it's them as they are yellow-colored items to pick up on your way. They are also chronologically placed, which means if you miss a number, you need to travel back and find the missing one. There are 10 to be found.

    0:01 - Mysterious Text Data 01
    0:15 - Mysterious Text Data 02
    0:34 - Mysterious Text Data 03
    0:54 - Mysterious Text Data 04
    1:19 - Mysterious Text Data 05
    1:40 - Mysterious Text Data 06
    1:56 - Mysterious Text Data 07
    2:15 - Mysterious Text Data 08
    2:37 - Mysterious Text Data 09
    2:54 - Mysterious Text Data 10

    Brain Field Expert
    Raised the EXP bonus to the maximum.

    During Phase 3 you will unlock Brain Drive, which activates when you fill up the purple bar next to your health at the bottom of the screen. When you are in this mode, EXP is raised by attacking and defeating enemies. Max you can raise it during the Brain Drive is 1.50x, and then you need to activate Brain Field (unlocked in Phase 4, initiated by pressing L3 + R3 when in Brain Drive mode). Raise to 1.50x, activate brain field, try to raise to 1.80x and that will unlock the trophy.

    Collector
    Used Item Exchange for the first time. *Does not include add-ons.

    Exchanging items can be done from the Shop. This is really easy and it's rewarded for the first exchange you make.

    Collection Freak
    Exchanged 100 types of items at shops. *Does not include add-ons.

    This will happen naturaly if you go after all gifts towards your allies + visial exchange items for 100 visual attachments trophy. In Shops there is an Exchange option unlocked quite soon in the story, so you need to exchange 100 items to get the trophy. Like said, if you chase the mentioned trophies, you will have more than enough to unlock this one.

    Everyone's Ally
    Completed a quest for the first time.

    Quests are unlocked in the town areas soon at the start of the game (around Phase 2). Further quests can also be initiated at later town zones (safe zones), which makes the list of 4 areas: Seiran City, Suoh City Ryujin Ward, Musubi’s & OSF Hospital.

    You will know an NPC has a quest for you based on the "pyramid-like" icon above their heads (different from the text icon which just brings the conversation). You can take the quest and do it when you want, and you can do them all before the end of Phase 11 (before you go on the mission). Finishing the game and loading the clear save game data unlocks more quests.

    For this trophy, simply finish 1 quest.

    Heroic OSF
    Completed 30 quests.

    Quests are unlocked in the town areas soon at the start of the game (around Phase 2). Further quests can also be initiated at later town zones (safe zones), which makes the list of 4 areas: Seiran City, Suoh City Ryujin Ward, Musubi’s & OSF Hospital.

    You will know an NPC has a quest for you based on the "pyramid-like" icon above their heads (different from the text icon which just brings the conversation). You can take the quest and do it when you want, and you can do them all before the end of Phase 11 (before you go on the mission). Finishing the game and loading the clear save game data unlocks more quests.

    There are more than 60 sidequests with (30+ each) both characters. The easiest way to get this trophy is to finish the easiest 15 from each, or how you prefer. To finish the quest, you need to set it to active, do the condition and finish it from the menu, not by goind back to the initia NPC (which makes your life easier). To find enemies needed for quests, simply open your menu and find the details of Enemies in the Library section.

    Suppressor of All Enemies
    Completed the Enemy Compendium. *Does not include add-ons.

    For completing the Enemy Compendium you will have to finish both playthroughs. When you do so, you will fill out the complete enemy data. As you also need to finish all of the Bond Episodes, and those sometimes take you to some dungeons, combining this and your playthroughs will be enough to unlock this trophy.

    Baki-s
    Everyone wore Baki heads.

    For this trophy, you will need to equip Baki Heads on all 10 characters. Baki Head attachments are visual items and you can get them in Exchange part of the Shop. You can't unlock this trophy before Phase 9 Standby of the story - that is the first opportunity to do so as you get all characters then.

    Also note that locations of some enemies can be different depending on your story progress, this video was made on Kasane's story, Part 9 Standby. You can always check enemy locations in your Enemy Library, and returning back to your home base, then back to some area resets the enemies.

    Rummy Type Supression is really easy to get, there are tons on correspoding enemies on Kunad Highway - Junction area.

    For Sabbat-Type Suppresion, you will need to kill wither Sabat enemies. Note - It seems like blue items, which this one is, falls more often when you kill the enemy the regular way, no brain smash. Brain smash drop more rare materials, so to raise your chances, kill the enemy with your attacks.

    0:01 - "Rummy-Type Suppresion +" material Location
    1:38 - "Sabbat-Type Suppresion" material location
    3:12 - Make at least 1 Baki Head and equip it on all 10 characters

    Wheels Gone Wild
    Defeated 5 enemies with 1 bus.

    You need to use a bus with your L2 attack and while driving kill 5 enemies. First opportunity is at Kunad Highway, and this task should be fairly easy to do.

    Helping Hand
    Revived by an ally for the first time.

    Another random trophy. Sometimes when you die, your ally can revive you. Usually this happens on boss fights (you and dying), so fingers crossed that an ally will revive you. Make a save before some boss fight and die, to force this one, if you don't get it naturaly.

    Trusted Ally
    Initiated a guardian vision for the first time.

    First you need to unlock Guardian Vision ability, which is an ally ability which become available after you unlock Bond Level 2 with any ally. Randomly during the fight, an ally can take the damage in your place, thus unlocking the trophy. It should happen naturaly, just make sure to raise those bond levels!

    You Are Not Alone
    Saved inside the brain field for the first time.

    Brain Field is unlocked during Phase 4 of the story. To active it, you will have to press L3 + R3 while in Brain Drive mode.

    You will be transfered to another alternate area where you fight enemies. For this trophy, some ally needs to save you, and this is completely random. After around 15 secs in this mode an ally can come to your aid and rescue you from it. Keep activating the brain field and it should happen eventually.

    Fierce Psychokinesis User
    Threw 100 objects with psychokinesis.

    Psychokinesis attacks will be your best buddy in this game. You throw object by holding R2 button when prompted (when your brain power bar is filled a bit). Keep doing this as you play, and you should unlock it in no time.

    Cunning Brain Smash
    Defeated 3 enemies at the same time with Brain Crush.

    Brain Smash is the finisher more that usually occurs when you deplete enemies yellow bar. It's something like their stagger bar. For this trophy you will to stagger 3 enemies close to each other at once, then initiate the Brain Smash and you need to smash all 3 with L2 to get the trophy. The easiest way to do it is in Kunad Highway - Junction area. Simply drive a bus, and when you reach a group of multiple enemies, press L2 again to shovel that bus into enemies, making it and them explode and leaving them ready for your trophy.

    Friendship
    Revived allies 5 times.

    When you ally dies in a fight, you can get close to them and hold up on D-pad to revive him/her. Do this 5 times to unlock the trophy. Usually my allies died at boss fights, so you can try and make use of that.

    Suoh Incident
    STORY

    The Suoh Incident occurred.

    Automatic Story Unlock.

    One Will
    STORY

    Gathered all party members.

    Automatic Story Unlock.

    Fashion Debut
    Changed your Visual Equipment for the first time. *Does not include add-ons.

    When you open your menu (when inside the game), under Equipment you can find another tab -> Visual Equipment. You need some costume or attachment (attachments are easily gathered in Exhange section of the Shop). Simply equip one to unlock the trophy.

    Fashionista
    Collected 100 attachments. *Does not include add-ons.

    Attachments can be purchased from the Shop, or Exchanged from the Shop. Note that the ones with "*" at the end of their name are preorder/deluxe edition attachments and those DO NOT count towards the trophy.

    You unlock more when you progress through the story. At the end of the game you can buy up to 35 attachments, the rest needs to be exchanged. You can exchange 65 attachments, make a save and buy those 35 different ones (you can carry and buy only 1 of each!), load the game after trophy pops (you want to save your money for the 200k money trophy). 

    Some are also found during sidequest as rewards or in dungeons, but rarely.