Rescue five camp people.
Defeat the Mutant Bison boss.
Defeat the Attack Copter boss.
Execute an enemy with an acid bottle.
Defeat 99 elite enemies.
Explode 99 cars.
Defeat a boss without taking damage.
Grab and throw an enemy for the first time.
Buy all items in a shop.
Reach the desert for the first time.
Kill a boss only with unarmed attacks.
Have 3 labrador puppies at the same time.
Execute an enemy with a lamp.
Defeat any boss without using any skills.
Have 499 golden badges at one time.
Unlock 9 relics.
Unlock 9 skills.
Unlock 9 weapons.
Have 999 infection samples at one time.
Die in the tutorial.
Defeat the Walker Droid boss.
Revive a co-op player.
Make noxious gases during jump.
Execute an enemy with a tear-gas grenade.
Unlock 9 improvements.
Find the Biologist
Unlock 99 blueprints.
Complete the Tutorial.
Unlock 9 clothings.
Open a huge treasure chest for the first time.
Defeat a boss in co-op mode.
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