In a public match, complete the generator at the mess hall in the Nostromo Wreckage and escape.

In public matches, make 30 unique survivors scream.

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

Defeat Stage 4 G with 4+ minutes left until detonation.

Complete Sherry's segment.

Shoot a zombie dog or a licker out of the air.

Complete Leon's story.

Open all of the safes and locks in the game.

Read a letter left behind by Jill.

Shoot the grenade you fed to an enemy.

Destroy a Mr. Raccoon.

Increase your inventory slots.

Defeat an enemy with a knife.