Make 20 enemies kill each other using Psychotropic Grenades.
Assist Dr. Vermetti in his war on worms.
Harvest 100 enemies with a combine harvester.
Protect humanity's treasures from invaders with no taste.
Discover Fulbert's great invention.
Find out what happened to the English airman.
Use the mininuke to eliminate 100 enemies at once.
Sign Secchi's rifle.
Find out what happened to Alessandro.
Melee a big enemy.
Unlock 10 S.A.M.s in a single playthrough.
Send Mental a message he won't forget.
Beat the game on any difficulty.
Kill 5 enemies in a row while your health is below 10 HP.
Escape the Oil Rig.
Finish a text adventure. On an oil rig. During an alien invasion.
Kill 100 enemies with a headshot.
Get justice. Get the Holy Grail. Get screwed over.
Go on a date with Hellfire.
Dismember 50 enemies with cannonballs.
Navigate the citadel of Carcassonne. Start reassembling your team.
Save a princess. Doesn't get more classic than that.
Kill 11 different enemies using melee attacks.
What if you could talk to the monsters?
Achievement is your middle name.
Cross the French countryside and get very cross.
Kill 50 healthy Kleers with a direct double shotgun hit.
Don't fear the reaper. Be the reaper.
Destroy 10 propaganda drones.
Assist a couple of young ladies out hunting.
Ride the Popemobile to victory.
Spend 1000 minigun rounds while firing continuously.
Meet a powerful granny.
Make sure Gabriella is OK.
Party like it's 199.
Kill a Witchbride using C4.
Kill 20 enemies while dual wielding double shotguns.
Head into Rome. Ditch Rodriguez.
Get a weaponized black hole, using science.
Run away from an angry volcano you foolishly antagonized.
Collect scorched aliens for Professor Kiesel.
Die HAARP With A Vengeance.
Kill 5 enemies during a single Time Warp slowdown.
Kill an Aludran Reptiloid using nothing but a pistol.
Recover the alien artifact located by Dr. Stein.
Kill a Belcher using Belcher collateral barf damage.
Recover a key stolen by a cultist.
One-shot kill 3 Werebulls with a shotgun.
Get together with your friends and kill something big.
Fight alongside Massimo Murena.
Unlock a S.A.M.
Save the rookie. Find Father Mikhail. See the sights.
Kill 3 enemies with a double shotgun blast.
Get knocked on the head and remember how you got here.