Amnesia: Rebirth

Missable

As you progress through the game, especially after the story-related instances where you get "caught", Tasi will bring up her arms into view and you'll see them turn a rather unpleasant color before disappearing into her arms again. Your arms represent how contaminated/tainted you are and how close you are to becoming a Harvester. For this trophy, you need to keep your arms (and your mind) as clean as possible. For the sake of simplicity, you want to aim to not become tainted more than 3 times in one single playthrough. A few things contribute to this:

• If you stay in the dark too long, your fear will increase, causing veins to appear on the border of your screen. If you remain in the dark without any sort of relief (lighting a match, checking on the little one, etc), then you'll start to see flashes of disturbing images, after which you'll go into a mental struggle. If you don't struggle free, you won't die or get captured, but you will become more tainted. The darkness is much more forgiving in the earlier chapters of the game and far more impactful in the later chapters.
• If you stare at disturbing things too long (dead bodies, bones/guts, holes in the wall where the monsters come out), you'll go into the same mentally disturbed state that staying in the dark too long will put you in.
• From the chapter The Cistern and on, you'll have to deal with shadow monsters who will stalk and sniff you out. You can try hiding from them by laying on the ground (hold down ), but it's not always guaranteed to work, so do your best to just stay away from them as much as possible. If they capture you, you'll go through the same struggle sequence mentioned above (and below). If you break free, run. If you don't, you'll "die" and be transported to a different area in the chapter and will become more tainted.
• Towards the end of the game, you'll have to deal with flying spirits and, at the very end, the Goddess, all of whom have a beam of light protruding from their face. If you get caught in this beam, quickly run behind something shield yourself or you'll end up in another struggle. If you manage to break free (these feel much more difficult to break free from), run. If you don't, you'll "die" and will be transported to a different area in the chapter. As with the others, you will also become more tainted.

The Struggle is Real: When you get into a struggle, if it was from being captured, the creature that did the capturing will appear in front of you. If it was from fear, you'll just crouch down and start losing your mind. Both struggles require you to use the  and  to break free. The problem is... the game doesn't exactly tell you how to use them... The method I've found that works best is to rotate each analog stick in opposite directions. You don't need to go crazy or violent with them, you just need to make sure both sticks are constantly moving.

If you don't break free, it's highly recommended you exit out of the game, and hit "continue" on the main menu so you can try again. When you get to the flying creatures, you can manually save before attempting to pass them so if you get caught, you don't have to replay the entire chapter. While this is a bit of a cheese method, it honestly will only help you in getting this trophy.

Laudanum: Laudanum will not help your contamination level/arms. It's purpose is to reduce your fear (the veins that appear around the border of your screen/your eyes). If you stay in the dark too long and find that going into light or checking on the little one is doing little to nothing to reduce the veins, popping a dose of Laudanum will help. There are 3 bottles in the game: 1 by the fire in the building in The Dark World (where the professor is) and 2 more in the cage in the Arsenal. Using this won't void the trophy and will only add in making sure Tasi doesn't lose her mind.

The Laboratory: Whether or not you take the treatment for Amari in this chapter doesn't matter. Choose whichever you wish.

The Ending: You want to go for the Provider ending for this trophy, as it's the only one where you'll make a "clean" escape.

Outside of all of this, just make sure you're staying in the light as much as possible. If you find yourself out of oil for your Lantern, matches will help a little bit with keeping your fear at bay, but you really want to be light torches in rooms as you seem them. As long as you keep your deaths/captures to a maximum of 3 and choose the proper ending, the trophy will unlock once the final cutscene plays out. You'll know if you've met the requirements for this in the ending scene with the Goddess. If she straight up calls you a Harvester, you're too far gone. If she says you don't have the heart to make Vitae, you can still get it so long as you don't get caught in her sight in the final "escape".