Them and Us

Die for the first time.

Find a way to unlock the bow-gun mechanism.

Obtain all weapons.

Finish the game in under 3 hours.

Find all documents in the game.

Kill a stalker while executing an instant-death attack.

Unlock all costumes.

Kill a Walker.

Kill all the shadow creatures on Fog Island.

Finish the game in Over The Shoulder mode.

Finish the game on Professional difficulty.

Finish the game without saving.

Unlock the main gate.

Enter Dr. Arnold Howard's research chamber.

Finish the story in fixed camera mode.

You awoke in the Master's house and have managed to escape. But the nightmare has only just begun.

Unlock the mysterious key known as Key to the Unknown [Special item].

Finish the game on Hard difficulty.

Finish the story with an S+ Rank on "Professional".

Unlock the door to the old tower.

Kill all the walkers in the mansion.

Unlock all rooms from the Mansion.