No missable achievements (plus 20 unknown)
Sign in with Steam or Xbox to track your progress, and:
Decapitate an Enemy
Kill 1 Enemy
Kill 100 Enemies
Score 10,000 PTS
Score 50,000 PTS
Customize your Player
Kill 1,000 Enemies
Score 100,000 PTS
Score 250,000 PTS
Kill 10,000 Enemies
Score 500,000 PTS
Create 100 Gibs
Score 1,000,000 PTS
Unlock the Mooch Follower
Kill 100,000 Enemies
Create 100,000 Gibs
Create 10,000 Gibs
Create 1,000,000 Gibs
Kill 1,000,000 Enemies
Create 1,000 Gibs