Complete the game in Survival Mode.

Kill 100 enemies with assault rifles.

Kill 200 Mutants.

Attain a Grimoire score of 777.

Inspect another player.

Kill a librarian.

Drink at every occasion.

On the level OUTPOST reach the radio tower and broadcast the commander's message.

Kill 20 lurkers.

Kill 30 human enemies with headshots.

Wipe your Gas Mask 20 times.

Kill 10 Enemies in a row without taking any damage.