This is the List of Achievements attainable for Gears of War on the Xbox 360. Original achievements provide 1,000 Gamerscore and DLC achievements provide 250 gamerscore.

See also: List of Achievements in Gears of War 2

Prison Breakout
	Completed tutorial level on any skill level	10

Completed Act 1 on Casual
	Complete Act 1 on Casual Difficulty	10

Completed Act 2 on Casual
	Complete Act 2 on Casual Difficulty	10

Completed Act 3 on Casual
	Complete Act 3 on Casual Difficulty	10

Completed Act 4 on Casual
	Complete Act 4 on Casual Difficulty	10

Completed Act 5 on Casual
	Complete Act 5 on Casual Difficulty	10

Completed Act 1 on Hardcore
	Complete Act 1 on Hardcore Difficulty	20

Completed Act 2 on Hardcore
	Complete Act 2 on Hardcore Difficulty	20

Completed Act 3 on Hardcore
	Complete Act 3 on Hardcore Difficulty	20

Completed Act 4 on Hardcore
	Complete Act 4 on Hardcore Difficulty	20

Completed Act 5 on Hardcore
	Complete Act 5 on Hardcore Difficulty	20

Completed Act 1 on Insane
	Complete Act 1 on Insane Difficulty	30

Completed Act 2 on Insane
	Complete Act 2 on Insane Difficulty	30

Completed Act 3 on Insane
	Complete Act 3 on Insane Difficulty	30

Completed Act 4 on Insane
	Complete Act 4 on Insane Difficulty	30

Completed Act 5 on Insane
	Complete Act 5 on Insane Difficulty	30

Mercenary
	Complete all acts on Casual Difficulty	10

Soldier
	Complete all acts on Hardcore Difficulty	20

Commando
	Complete all acts on Insane Difficulty	30

My Love for You Is Like a Truck
	Defeat a Berserker on Hardcore Difficulty	20

Broken Fingers
	Defeat a Corpser on Hardcore Difficulty	20

A Dish Best Served Cold
	Defeat General RAAM on Hardcore Difficulty	20

Dom-curious
	Complete 1 co-op chapter as Dominic Santiago on any difficulty	10

Domination
	Complete 10 different co-op chapters as Dominic Santiago on any difficulty	20

I Cant Quit You Dom
	Complete all acts in co-op as Dominic Santiago on any difficulty	30

Time to Remember
	Recover one-third of the COG Tags (on any difficulty)	10

Honor-Bound
	Recover two-thirds of the COG Tags (on any difficulty)	20

For the Fallen
	Recover all of the COG Tags (on any difficulty)	30

Zen and the Art of Reloading
	Perform 25 perfect active reloads (on any difficulty)	10

Zen and the Art Part 2
	Perform 5 perfect active reloads in a row (on any difficulty)	20

Clusterluck
	Kill 3 enemies at once 10 different times (on any difficulty)	20

Always Remember Your First
	Finish playing a versus ranked match	10

Dont Hate the Player
	Finish with the highest points in a ranked match	10

Mix It Up
	Win a ranked match in every versus game type	20

Around the World
	Win a ranked match on every versus map	30

Cant Touch Me
	Win 10 ranked matches without losing a round	10

A Series of Tubes
	Host and complete 50 ranked matches	20

Its a Massacre
	Kill 100 enemies in ranked matches with the Chainsaw	10

Dont You Die On Me
	Revive 100 teammates in ranked matches	10

The Money Shot
	Kill 100 enemies in ranked matches with a headshot	20

Curb Appeal
	Kill 100 enemies in ranked matches with the curb stomp	20

Capital Punishment
	Kill 100 enemies in ranked matches with an execution	20

I Spy with My Little Eye
	Kill 100 enemies in ranked matches with the Longshot	20

Pistolero
	Kill 100 enemies in ranked matches with a pistol	20

The Nudge
	Kill 100 enemies in ranked matches with the Torque Bow	20

Dont Hurt Em
	Kill 100 enemies in ranked matches with the Hammer of Dawn	20

Fall Down Go Boom
	Kill 100 enemies in ranked matches with the Boomshot	20

Is It a Spider
	Kill 100 enemies in ranked matches with grenade tag	30

Seriously ...
	Kill 10,000 people in versus ranked match total	50

DLC Achievements

THIS! IS! ANNEX!
	Complete 100 multiplayer matches of 3+ rounds in Annex and capture 3 objectives in each match	40

Inconceivable!
	Win 20 rounds of multiplayer matches in Annex by fewer than 5 points	30

Nub Pwn3r
	Win 20 rounds of multiplayer matches in Annex by shutting out the opposing team	30

You Down With E.P.I.C?
	Win a multiplayer match of 3+ rounds in any game type on 6 different downloadable maps	30

Green Thumb
	Win 20 multiplayer matches of 3+ rounds in any game type on the Garden multiplayer map	30

All That Juice
	Win 20 multiplayer matches of 3+ rounds in any game type on the Process multiplayer map	30

Purdy Mouth
	Win 20 multiplayer matches of 3+ rounds in any game type on the Bullet Marsh multiplayer map	30

Mind The Gap
	Win 20 multiplayer matches of 3+ rounds in any game type on the Subway multiplayer map	30