Put 5 Zone Dogs 'to sleep'.
Return to the Ark!
Collect 100% of Pripp's artifact wishlist.
Collect 50% of Pripp's artifact wishlist.
Decommission 10 'Mechanical men.
Kill an enemy by knocking them off a high place.
Kill an enemy by making the Pyro drop his Molotov.
Reach Eden.
Unlock all Mutations in each character's skill tree.
Kill 10 enemies using 'Chain Lightning'.
Trap 10 enemies using 'Tree Hugger'.
Obtain all achievements!
Kill a crew member.
Complete all of Pripp's side-missions.
Collect every artifact in the Zone.
Collect 600 scrap.
Collect all notes in the Zone.
Convince Big Khan to join your crew.
Hit 3 enemies at once with Big Khan's Ground Pound.
Turn 3 enemies at once into cover.
Kill 3 enemies in a row whilst invisible.
Complete the SEED OF EVIL without using medkits.
Complete the SEED OF EVIL in IRON MUTANT mode.
Destroy 5 Pod Spawners before they release new enemies.
Collect every type of hat in the Zone.
Use 'Corpse Eater' to interrupt a resurrecting enemy.
Possess 10 enemies with 'Puppeteer'.
Knock down 10 enemies using 'Hog Rush'.
Reach Eden in 'IRON MUTANT' mode on VERY HARD.
Reach Eden in 'IRON MUTANT' mode on VERY HARD without losing a crew member.
Reach Eden in 'IRON MUTANT' mode (Any difficulty).
Taunt a crew member who is under mind control.
Improve 5 upgradable weapons to level III.
Kill 40 Ghouls.
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