All Weapons
Not unlocked yetPurchase all weapons in the campaign
Time Limit
Not unlocked yetFinish a mission within time limit
Bonus 10
Not unlocked yetBonus multiplier reached 10
Bonus 100
Not unlocked yetBonus multiplier reached 100
Bonus 200
Not unlocked yetBonus multiplier reached 200
Bonus 50
Not unlocked yetBonus multiplier reached 50
Easy
Not unlocked yetFinish all missions in easy
Hard
Not unlocked yetFinish all missions in hard
Insane
Not unlocked yetFinish all missions in insane
Normal
Not unlocked yetFinish all missions in normal
Hospital
Not unlocked yetFinish the map Hospital
10 Kills
Not unlocked yetKill 10 creatures
100 Kills
Not unlocked yetKill 100 creatures
1000 Kills
Not unlocked yetKill 1000 creatures
10000 Kills
Not unlocked yetKill 10000 creatures
15000 Kills
Not unlocked yetKill 15000 creatures
5000 Kills
Not unlocked yetKill 5000 creatures
Laboratory
Not unlocked yetFinish the map Laboratory
Laboratory - Secret Entrance
Not unlocked yetFinish the map Laboratory - Secret Entrance
Mall
Not unlocked yetFinish the map Mall
Moneypacks
Not unlocked yetPickup 100 moneypacks
News
Not unlocked yetFind one newspaper
News 12
Not unlocked yetFind 12 different newspapers
News 21
Not unlocked yetFind all newspapers