There are 57 Gears of War achievements (49 without DLC) worth 1,250 GS.
| Prison Breakout | 10 |
| Completed tutorial level on any skill level | |
| Completed Act 1 on Casual | 10 |
| Complete Act 1 on Casual Difficulty | |
| Completed Act 2 on Casual | 10 |
| Complete Act 2 on Casual Difficulty | |
| Completed Act 3 on Casual | 10 |
| Complete Act 3 on Casual Difficulty | |
| Completed Act 4 on Casual | 10 |
| Complete Act 4 on Casual Difficulty | |
| Completed Act 5 on Casual | 10 |
| Complete Act 5 on Casual Difficulty | |
| Mercenary | 10 |
| Complete all acts on Casual Difficulty | |
| Completed Act 1 on Hardcore | 20 |
| Complete Act 1 on Hardcore Difficulty | |
| Completed Act 2 on Hardcore | 20 |
| Complete Act 2 on Hardcore Difficulty | |
| Completed Act 3 on Hardcore | 20 |
| Complete Act 3 on Hardcore Difficulty | |
| Completed Act 4 on Hardcore | 20 |
| Complete Act 4 on Hardcore Difficulty | |
| Completed Act 5 on Hardcore | 20 |
| Complete Act 5 on Hardcore Difficulty | |
| Soldier | 20 |
| Complete all acts on Hardcore Difficulty | |
| Completed Act 1 on Insane | 30 |
| Complete Act 1 on Insane Difficulty | |
| Completed Act 2 on Insane | 30 |
| Complete Act 2 on Insane Difficulty | |
| Completed Act 3 on Insane | 30 |
| Complete Act 3 on Insane Difficulty | |
| Completed Act 4 on Insane | 30 |
| Complete Act 4 on Insane Difficulty | |
| Completed Act 5 on Insane | 30 |
| Complete Act 5 on Insane Difficulty | |
| Commando | 30 |
| Complete all acts on Insane Difficulty | |
| Time to Remember | 10 |
| Recover one-third of the COG tags | |
| Honor-Bound | 20 |
| Recover two-thirds of the COG tags | |
| For the Fallen | 30 |
| Recover all of the COG tags | |
| My Love for You Is Like a Truck | 30 |
| Defeat a Berserker on Hardcore Difficulty | |
| Broken Fingers | 30 |
| Defeat a Corpser on Hardcore Difficulty | |
| A Dish Best Served Cold | 30 |
| Defeat General RAAM on Hardcore Difficulty | |
| Zen and the Art of Reloading | 10 |
| Perform 25 perfect active reloads | |
| Zen and the Art Part 2 | 20 |
| Perform 5 perfect active reloads in a row | |
| Clusterluck | 20 |
| Kill 3 enemies at once 10 different times | |
| A Series of Tubes | 20 |
| Host and complete 50 ranked matches | |
| Dom-curious | 10 |
| Complete 1 co-op chapter as Dominic Santiago on any difficulty | |
| Domination | 20 |
| Complete 10 different co-op chapters as Dominic Santiago on any difficulty | |
| I Can't Quit You Dom | 30 |
| Complete all acts in co-op as Dominic Santiago on any difficulty | |
| Don't You Die On Me | 10 |
| Revive 100 teammates in ranked matches | |
| Fall Down Go Boom | 20 |
| Kill 100 enemies in ranked matches with the Boomshot | |
| Pistolero | 20 |
| Kill 100 enemies in ranked matches with a pistol | |
| The Nuge | 20 |
| Kill 100 enemies in ranked matches with the Torque Bow | |
| I Spy with My Little Eye | 20 |
| Kill 100 enemies in ranked matches with the Longshot | |
| Don't Hurt 'Em | 20 |
| Kill 100 enemies in ranked matches with the Hammer of Dawn | |
| It's a Massacre | 10 |
| Kill 100 enemies in ranked matches with the Chainsaw | |
| Curb Appeal | 20 |
| Kill 100 enemies in ranked matches with the curb stomp | |
| Capital Punishment | 20 |
| Kill 100 enemies in ranked matches with an execution | |
| Is It a Spider | 30 |
| Kill 100 enemies in ranked matches with grenade tag | |
| The Money Shot | 20 |
| Kill 100 enemies in ranked matches with a headshot | |
| Always Remember Your First | 10 |
| Finish playing a versus ranked match | |
| Don't Hate the Player | 10 |
| Finish with the highest points in a ranked match | |
| Mix It Up | 20 |
| Win a ranked match in every versus game type | |
| Around the World | 30 |
| Win a ranked match on every versus map | |
| Can't Touch Me | 20 |
| Win 10 ranked matches without losing a round | |
| Seriously ... | 50 |
| Kill 10,000 people in versus ranked match total | |
| DLC: 'Hidden Fronts' Multiplayer Map Pack 2 | |
| Cost: Free Achievements: 5 Points: 150 | |
| You Down With E.P.I.C? | 30 |
| Win a multiplayer match of 3+ rounds in any game type on 6 different downloadable maps | |
| Green Thumb | 30 |
| Win 20 multiplayer matches of 3+ rounds in any game type on the Garden multiplayer map | |
| Mind the Gap | 30 |
| Win 20 multiplayer matches of 3+ rounds in any game type on the Subway multiplayer map | |
| Purdy Mouth | 30 |
| Win 20 multiplayer matches of 3+ rounds in any game type on the Bullet Marsh multiplayer map | |
| All That Juice | 30 |
| Win 20 multiplayer matches of 3+ rounds in any game type on the Process multiplayer map | |
| DLC: Game Title Update | |
| Cost: Free Achievements: 3 Points: 100 | |
| THIS! IS! ANNEX! | 40 |
| Complete 100 multiplayer matches of 3+ rounds in Annex and capture 3 objectives in each match | |
| Inconceivable! | 30 |
| Win 20 rounds of multiplayer matches in Annex by fewer than 5 points | |
| Nub Pwn3r | 30 |
| Win 20 rounds of multiplayer matches in Annex by shutting out the opposing team | |
