Make the Bad Guy run 5000 meters
Kill the Bad Guy 25 times
Spill 100 liters of blood
Get 60 passports
Kill the Bad Guy 5 times as he's escaping
Put a dog on a catapult
Commit your first assassination
Cut off 5 heads
Finish Level DNKTBG
Finish Level T666
Finish Level Zombies!
Kill a Bodyguard