Upgrade all weapons to Max level
Prevent the looter from obtaining a weapon
Kill 50 enemies without getting hurt
Find $5,000
Find the secret cave behind the bushes
erm... what?
Defeat a boss with just the pistol
Reach the end of the first level.
Achieve a x20 multiplier
Survive the electric chase
Allow the looter to live.
Survive the worm invasion
Dissolve 5 zombies in acid
Destroy 2,000 environment objects
Defeat the cellar inhabitant.
The key to everything, and then some
Score 250k in survival mode
Finish the story
Survive the ambush at the schoolyard
Obtain automatic guards for the village
Score 100k in survival mode
Eliminate the threat in the laboratory
Solve the village's insect problem
Find all pieces of the flak jacket
Help all 6 park defenders to survive
Achieve a x10 multiplier
Score 50k in survival mode
Acquire all weapons in story mode
Help the refugees at the factory
Finish the story on
Bring the lighthouse back to life
Defeat a boss without getting hurt
Find all parts of the golden gun
Blow up 7 enemies with a single explosion
Survive the subway journey
Shred 100 monsters with the harvester