Reach the end of the first level.

Allow the looter to live.

Prevent the looter from obtaining a weapon

Defeat the cellar inhabitant.

Help all 6 park defenders to survive

Survive the worm invasion

Solve the village's insect problem

Obtain automatic guards for the village

Survive the electric chase

Shred 100 monsters with the harvester

Survive the subway journey

Survive the ambush at the schoolyard

Help the refugees at the factory

Bring the lighthouse back to life

Eliminate the threat in the laboratory

Finish the story

Finish the story on "maniac" difficulty

Kill 50 enemies without getting hurt

Defeat a boss without getting hurt

Defeat a boss with just the pistol

Destroy 2,000 environment objects

Score 50k in survival mode

Score 100k in survival mode

Score 250k in survival mode

Acquire all weapons in story mode

Upgrade all weapons to Max level

Blow up 7 enemies with a single explosion

Dissolve 5 zombies in acid

Find all parts of the golden gun

Find all pieces of the flak jacket

Find $5,000

Achieve a x10 multiplier

Achieve a x20 multiplier