Uncover the secret in the old house.

Use psychostimulants.

Clear insects off a door using a knife.

Escape to the yard.

Destroy a Mr. Everywhere statuette.

Put an unrelated object on a shadow plinth.

Escape from the guest house.

Close an open door by yourself.

In Multiplayer, roadkill 5 enemies

In Multiplayer, as a squad leader call in 2 reinforcements in a round

Complete "The 4th Survivor" extra mode.

Complete Leon's story on "Standard" or "Hardcore" with an S rank.

Read all of the files.