| Achievement | How to unlock |
| Annex: Now With Execution Rules75G | Win an Annex match on each Flashback and Combustible Map Pack map (public matches only)
|
| Bound by a Shared Past 15G | Win a Wingman match on each of the 5 Flashback Map Pack maps
|
| Forged in the Fire 15G | Win a Wingman match on each of the 3 Combustible Map Pack maps
|
| More Mystery, Less History 15G | Win a multiplayer match on each of the 5 Flashback Map Pack maps (any mode except Wingman)
|
| Skeletons in your Closet 20G | Complete waves 1 through 10 on all Flashback Map Pack maps in Horde (any difficulty)
|
| The Roof! The Roof! The Roof 15G | Win a multiplayer match on each of the 3 Combustible Map Pack maps (any mode except Wingman)
|
| Trial by, and on, Fire 20G | Survive first 10 Horde waves on Combustible Map Pack maps as a team
|
