Complete each achievement to get the allotted gamerscore.
| Unlockable: | How to unlock: |
| Skeletons in your Closet (20) | Complete waves 1 through 10 on all Flashback Map Pack maps in Horde (any difficulty) |
| More Mystery, Less History (15) | Win a multiplayer match on each of the 5 Flashback Map Pack maps (any mode except Wingman) |
| Bound by a Shared Past (15) | Win a Wingman match on each of the 5 Flashback Map Pack maps |
| Trial by, and on, Fire (20) | Survive first 10 Horde waves on Combustible Map Pack maps as a team |
| The Roof! The Roof! The Roof... (15) | Win a multiplayer match on each of the 3 Combustible Map Pack maps (any mode except Wingman) |
| Forged in the Fire (15) | Win a Wingman match on each of the 3 Combustible Map Pack maps |
| Annex: Now With Execution Rules (75) | Win an Annex match on each Flashback and Combustible Map Pack map (public matches only) |
| Rookie Gear (10) | Earn enough multiplayer experience to reach level 5 (Public only) |
| Seasoned Gear (20) | Earn enough multiplayer experience to reach level 15 (Public only) |
| Battle-Tested Gear (30) | Earn enough multiplayer experience to reach level 25 (Public only) |
| Battle-Hardened Gear (50) | Reach level 50 and play a match on each of the 4 Snowblind Map Pack maps (Public only) |
| Veteran Gear (75) | Reach level 100 and win a match on each of the 4 Snowblind Map Pack maps (Public only) |
| Never Eat Red Snow (20) | Complete waves 1 through 10 on all Snowblind Map Pack maps in Horde (any difficulty) |
| Icy Dead People (25) | Complete waves 1 through 50 on any Snowblind Map Pack map in Horde (any difficulty) |
| Frigid Body Dynamics (5) | Play a multiplayer match on each of the 4 Snowblind Map Pack maps (any mode) |
| The Weather Outside Is Lethal (15) | Win a multiplayer match on each of the 4 Snowblind Map Pack maps (any mode) |
| My Way or the Highway (25) | Without being detected, complete the "Road to Ruin" deleted scene after choosing the stealth option |
| Highway to Hell (25) | Complete the "Road to Ruin" deleted scene after choosing the guns blazing option |
| Two for the Road (25) | Complete the "Road to Ruin" deleted scene in co-op as either Marcus or Dom |
| Be Careful What You Wish For (10) | Reach level 8 in multiplayer and complete waves 1 - 10 on the War Machine map in Horde |
| Ride It All Night Long (10) | Reach level 10 in multiplayer and complete waves 1 - 10 on the Highway map in Horde |
| No, But His Face Rings a Bell (15) | Reach level 15 in multiplayer and complete waves 1 - 20 on the Sanctuary map in Horde |
| Lost in Transition (20) | Reach level 20 in multiplayer and complete waves 1 - 20 on the Way Station map in Horde |
| Like Father, Like Gun (30) | Reach level 30 in multiplayer and complete waves 1 - 30 on the Allfathers Garden map in Horde |
| Am I Only Dreaming? (40) | Reach level 40 in multiplayer and complete waves 1 - 40 on the Memorial map in Horde |
| Blood on the Sand (50) | Reach level 50 in multiplayer and complete waves 1 - 50 on the Nowhere map in Horde |
| Afraid of the Dark (20) | Play a multiplayer match on each of the 7 Dark Corners Map Pack maps (any mode) |
| Did Not Go Gentle (30) | Win a multiplayer match on each of the 7 Dark Corners Map Pack maps (any mode) |
| Is It Hot or Is That Just You? (25) | Kill 25 Bloodmounts with a Scorcher while playing Horde on a Dark Corners Map Pack map |
