No missable achievements (plus 50 unknown)
Sign in with Steam or Xbox to track your progress, and:
Start the game
Commit your first assassination
Kill the Bad Guy in one day
Make the Bad Guy run away for the first time
Kill the Bad Guy over several days
Keep hold of the ball for 5 seconds
Fail 10 times
Put a dog on a catapult
Make the Bad Guy run away 10 times
Kill the Bad Guy 5 times on the same level
Kill the Bad Guy 25 times
Kill one innocent bystander
Kill the Bad Guy 5 times as he's escaping
Spend 2 hours playing the game
Spill 100 liters of blood
Kill one cop
Make the Bad Guy run away 25 times
Kill the Bad Guy 50 times
Fail 50 times
Get 60 passports
Associate 100 items
Cut off 10 legs
Finish Level Zombies!
Kill 10 innocent bystanders
Fling the Bad Guy 1000 meters away
Kill a Bodyguard
Make a pedestrian stop in front of a porn item 25 times
Kill 5 Bodyguards
Kill 5 cops
Kill 25 innocent bystanders
Get 60 teeth
Share one image on Twitter
Share one image on Facebook
Cut off 5 heads
Kill 10 Bodyguards
Kill the Bad Guy 25 times on the same level
Spill 500 liters of blood
Dismember the Bad Guy 50 times
Kill the Bad Guy 35 times as he's escaping
Cut off 50 legs
Make the Bad Guy read 50 magazines
Finish Level DNKTBG
Cut off 15 heads
Make the Bad Guy run 5000 meters
Make the Bad Guy watch 50 movies
Finish Level T666
Kill the Bad Guy 250 times
Spend 35 hours playing the game
Associate 1000 items
Get 396 stars