1. Prison Breakout - Completed tutorial level on any skill level.
2. Completed Act 1 on Casual - Complete Act 1 on Casual Difficulty.
3. Completed Act 2 on Casual - Complete Act 2 on Casual Difficulty
4. Completed Act 3 on Casual - Complete Act 3 on Casual Difficulty.
5. Completed Act 4 on Casual - Complete Act 4 on Casual Difficulty.
6. Completed Act 5 on Casual - Complete Act 5 on Casual Difficulty.
7. Mercenary - Complete all acts on Casual Difficulty.
8. Completed Act 1 on Hardcore - Complete Act 1 on Hardcore Difficulty.
9. Completed Act 2 on Hardcore - Complete Act 2 on Hardcore Difficulty.
10. Completed Act 3 on Hardcore - Complete Act 3 on Hardcore Difficulty.
11. Completed Act 4 on Hardcore - Complete Act 4 on Hardcore Difficulty.
12. Completed Act 5 on Hardcore - Complete Act 5 on Hardcore Difficulty.
13. Soldier - Complete all acts on Hardcore Difficulty.
14. Completed Act 1 on Insane - Complete Act 1 on Insane Difficulty.
15. Completed Act 2 on Insane - Complete Act 2 on Insane Difficulty.
16. Completed Act 3 on Insane - Complete Act 3 on Insane Difficulty.
17. Completed Act 4 on Insane - Complete Act 4 on Insane Difficulty.
18. Completed Act 5 on Insane - Complete Act 5 on Insane Difficulty.
19. Commando - Complete all acts on Insane Difficulty.
20. Time to Remember - Recover one-third of the COG tags (on any difficulty).
21. Honor-Bound - Recover two-thirds of the COG tags (on any difficulty).
22. For the Fallen - Recover all of the COG tags (on any difficulty).
23. My Love for You Is Like a Truck - Defeat a Berserker on Hardcore Difficulty.
24. Broken Fingers - Defeat a Corpser on Hardcore Difficulty.
25. A Dish Best Served Cold - Defeat General RAAM on Hardcore Difficulty.
26. Zen and the Art of Reloading - Perform 25 perfect active reloads (on any difficulty).
27. Zen and the Art Part 2 - Perform 5 perfect active reloads in a row (on any difficulty).
28. Clusterluck - Kill 3 enemies at once 10 different times (on any difficulty).
29. A Series of Tubes - Host and complete 50 ranked matches.
30. Dom-curious - Complete 1 co-op chapter as Dominic Santiago on any difficulty.
31. Domination - Complete 10 different co-op chapters as Dominic Santiago on any difficulty.
32. I Can't Quit You Dom - Complete all acts in co-op as Dominic Santiago on any difficulty.
33. Don't You Die On Me - Revive 100 teammates in ranked matches.
34. Fall Down Go Boom - Kill 100 enemies in ranked matches with the Boomshot.
35. Pistolero - Kill 100 enemies in ranked matches with a pistol.
36. The Nuge - Kill 100 enemies in ranked matches with the Torque Bow.
37. I Spy with My Little Eye - Kill 100 enemies in ranked matches with the Longshot.
38. Don't Hurt 'Em - Kill 100 enemies in ranked matches with the Hammer of Dawn.
39. It's a Massacre - Kill 100 enemies in ranked matches with the Chainsaw.
40. Curb Appeal - Kill 100 enemies in ranked matches with the curb stomp.
41. Capital Punishment - Kill 100 enemies in ranked matches with an execution.
42. Is It a Spider - Kill 100 enemies in ranked matches with grenade tag.
43. The Money Shot - Kill 100 enemies in ranked matches with a headshot.
44. Always Remember Your First - Finish playing a versus ranked match.
45. Don't Hate the Player - Finish with the highest points in a ranked match.
46. Mix It Up - Win a ranked match in every versus game type.
47. Around the World - Win a ranked match on every versus map.
48. Can't Touch Me - Win 10 ranked matches without losing a round.
49. Seriously ... - Kill 10,000 people in versus ranked match total.