Secrets
| Unlockable | How to Unlock |
|---|---|
| Insane difficulty | Successfully complete the game to unlock the Insane difficulty. |
Secret Gamerpic |
Clear the campaign on Insane to unlock a gamerpic of Marcus. |
Secret Gamerpic #2 |
Earn the Friends with Benefits achievement (Complete all acts in Co-op on any difficulty) to unlock a gamerpic of Marcus and Dom. |
Bonus multiplayer skins
| Unlockable | How to Unlock |
|---|---|
| Anthony Carmine | Successfully complete Act 1 in the original Gears Of War. |
| Dizzy Wallin | Successfully complete Act 1 in Single Player mode. |
| Flame Grenadier | Successfully complete Act 4 in Single Player mode. |
| Kantus | Successfully complete Act 2 in Single Player mode. |
| Lt. Minh Young Kim | Find 10 COG tags in the original Gears Of War. |
| RAAM | Defeat RAAM in the original Gears Of War on Hardcore difficulty. |
| Skorge | Successfully complete Act 5 in Single Player mode. |
| Tai Kaliso | Successfully complete Act 3 in Single Player mode. |
