Full list of all 40 Them and Us achievements.
The base game contains 19 achievements, and there are 2 DLC packs containing 21 achievements.
Kill all the shadow creatures on Fog Island.
Unlock Alicia’s base costume.
Kill a stalker while executing an instant-death attack.
Enter Dr. Arnold Howard's research chamber.
Unlock the door to the old tower.
Find a way to unlock the bow-gun mechanism.
Unlock the main gate.
Listen to any Famous LP record from start to finish.
You awoke in the Master's house and have managed to escape. But the nightmare has only just begun.
Finish the game in under 3 hours.
Finish the game without saving.
Unlock all costumes.
Finish the game on Professional difficulty.
Obtain all weapons.
Kill all the enemies inside the mansion.
Finish the game in Over The Shoulder mode.
Unlock all rooms from the Mansion.
Die for the first time.
Fight a Walker.
Finish the game on Hard difficulty.
Finish the story in fixed camera mode.
Find all documents in the game.
Finish the story with an S+ Rank on "Professional".