There are several requirements for this trophy, some have claimed you can use chapter select to get to the first requirement while some say they've tried and still did not unlock the trophy. It's up to you which you do, I say better safe than sorry.First requirement: Remove all the fingerprints (Scott's and Lauren's) from Manfred's shop
The list is as noted below.
- The white phone where Manfred was murdered.
- The black phone behind the front desk.
- The bathroom door. (Only if you touched it by entering the bathroom)
- The magnifying glass.
- The glass you drank scotch from. (Clean both if you can't remember which one)
- The scotch bottle. (You never touch it, but better safe than sorry)
- The dancing ballerina.
- The glass display case where Lauren leans on it. (if you take too long to find Manfred at the beginning)
- The front door.
- Back window of room with Manfred's body. (If you open after discovering Manfred's body)
Wipe all of them and the screen will shift to Manfred's corpse when you leave, otherwise it'll show the item you missed.Second requirement: Lauren, Kramer and Hassan must die
Hassan - When you enter the store, talk to Hassan, when the robber enters, do nothing, he'll get shoot and die.
Kramer - Do not give him his medication when he has his heart attack, if you are hit 3 times, you will not be able to earn this trophy.
Lauren - Let her drown, you can do nothing (Scott will get out on his own) or do all the QTE's.Third requirement: Madison and Norman also must die by the Killers hand
This one is sometimes confusing, as people think they can just die whenever (see Mad Jack or The Doc), this is not true, the Origami Killer must kill them.
Jayden must die at either Fish Tank (Paco's private room) or at the warehouse, simply do nothing in either case and he'll die.*IMPORTANT*
Regarding Jayeden, I found this, make sure you make note of it if you're having Jayden go to the warehouse:
If Ethan gets arrested in the chapter On the Loose and Jayden solves the puzzle, Jayden will come to save Shaun instead. Just begin by saving Shaun. After you saved him, Scott appears and kicks you away. Now because of a glitch, you cannot let Jayden die here as it won't count towards the Perfect Crime trophy. Instead disarm Shelby and let Jayden die at the conveyor belt
Madison must die in the killers apartment, some have said she can die at the warehouse but again, better safe than sorry. Just leave her in the 'safe room' and she'll die, or jump from the window, or stand next to the canister. Your choice.Fourth requirement: Scott goes free
The easiest way to do this is have everyone dead (or in jail for Ethan) by the time you are supposed to go to the warehouse.Fifth requirement: Ethan is dead or in jail
Ethan should be arrested in 'Fugitive' (after the Lizard Trial), then rescued by Jayden and arrested again on the chapter, 'On the Loose' (where Ethan must escape the motel), otherwise you risk screwing up this trophy. Doing it this way will earn you two additional trophies, if you haven't already earned them.
Ethan can be killed if he goes to the warehouse alone (however Shaun will live and his death might be required), but the jail method earns you a trophy, so it might be more worthwhile.Final requirement: Shaun is dead
Some say this isn't needed, but again, as I've said many times, better safe than sorry. This is accomplished by killing Jayden and Madison and having Ethan in jail.
If you done everything outlined above, you should earn this trophy.