This is the List of Achievements attainable for Gears of War 2 on the Xbox 360.
Gears of War 2 Achievements[]
| Green as Grass | ||
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Train the rook (any difficulty) | 10 
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| It's a Trap! | ||
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Story progression in Act 1, Chapter 2 | 10
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| Escort Service | ||
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Story progression in Act 1, Chapter 4 | 10
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| Girl About Town | ||
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Story progression in Act 1, Chapter 6 | 10
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| That Sinking Feeling | ||
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Story progression in Act 2, Chapter 4 | 10
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| Freebaird! | ||
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Story progression in Act 2, Chapter 5 | 10
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| Heartbroken | ||
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Story progression in Act 2, Chapter 6 | 10
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| Longitude and Attitude | ||
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Story progression in Act 3, Chapter 3 | 10
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| Tanks for the Memories | ||
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Story progression in Act 3, Chapter 4 | 10
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| Water Sports | ||
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Story progression in Act 3, Chapter 6 | 10
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| There's a Time for Us | ||
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Story progression in Act 4, Chapter 2 | 10
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| Better Wrapped in Beacon | ||
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Story progression in Act 4, Chapter 3 | 10
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| Have Fun Storming the Castle | ||
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Story progression in Act 4, Chapter 6 | 10
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| And the Horsey You Rode On | ||
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Story progression in Act 5, Chapter 1 | 10
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| You Are the Support, Son | ||
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Story progression in Act 5, Chapter 2 | 10
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| Brumak Rodeo | ||
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Story progression in Act 5, Chapter 4 | 10
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| Does This Look Infected to You? | ||
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Story progression in Act 5, Chapter 5 | 10
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| Tourist of Duty | ||
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Complete all campaign acts on Casual Difficulty | 25
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| Guerrilla Tactician | ||
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Complete all campaign acts on Normal Difficulty | 50
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| Artist of War | ||
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Complete all campaign acts on Hardcore Difficulty | 75
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| Suicide Missionary | ||
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Complete all campaign acts on Insane Difficulty | 150
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| Collector | ||
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Recover 5 collectibles (any difficulty) | 5
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| Pack Rat | ||
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Recover 20 collectibles (any difficulty) | 15
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| Completionist | ||
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Recover all 41 collectibles (any difficulty) | 30
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| One-Night Stand | ||
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Complete 1 chapter in co-op on any difficulty (Marcus or Dom) | 10
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| Open Relationship | ||
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Complete 10 chapters in co-op on any difficulty (Marcus or Dom) | 30
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| Friends with Benefits | ||
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Complete all acts in co-op on any difficulty (Marcus or Dom) | 50
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| Once More, with Feeling | ||
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Perform 30 perfect active reloads (any mode, this includes multiplayer ones and campaign ones) | 10
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| Takes a Licking | ||
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Melee 30 Tickers (any mode, Horde or Act 1 Part 2-3 is best to get this) | 30
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| Organ Grinder | ||
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Kill 30 enemies with a cover mounted Mulcher (any mode, any act, any map) | 10
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| Shock and Awe | ||
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Kill 30 enemies with the heavy Mortar (any mode, any act) | 10
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| Said the Spider to the Fly | ||
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Kill 10 enemies with a planted grenade (any mode) | 10
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| Crowd Control | ||
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Melee 10 enemies down with the Boomshield equipped (any mode, any act, friendly fire is good too) | 10
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| Smells Like Victory | ||
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Kill 30 enemies with the Scorcher Flamethrower (any mode, any act) | 10
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| Variety Is the Spice of Death | ||
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Kill an enemy with every weapon in the game (any mode, any map, any act, just one kill will make it count, does not include boomshields and ink grenades) | 30
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| Seriously 2.0 | ||
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Kill 100,000 enemies (any mode) | 50
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| Standing Here, Beside Myself | ||
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Win 3 matches of Wingman (public) | 10
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| Beat the Meatflag | ||
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Capture 10 meatflags in Submission (public) | 10
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| It's Good to be the King | ||
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Win 10 rounds of Guardian as the leader (public) | 10
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| You Go Ahead, I'll Be Fine | ||
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Win three matches of King of the Hill (public) | 10
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| Back to Basic | ||
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Successfully complete the 5 lessons of multiplayer Training Grounds | 10
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| Party Like It's 1999 | ||
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Play 1999 rounds of multiplayer (any mode, any map, any difficulty) | 30
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| Around the World, Again | ||
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Win a multiplayer match on each map (any mode) | 30
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| Dirty, Dirty Horde | ||
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Survive the first 10 waves of Horde (any difficulty, any map) | 20
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| Hoard the Horde | ||
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Survive all 50 waves of Horde (any difficulty, any map) | 30
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| Crossed Swords | ||
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Win 10 chainsaw duels (any mode) | 10
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| A Parting Gift | ||
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Kill 10 enemies with a grenade while down but not out (any mode) | 20
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| Pound of Flesh | ||
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Use a meatshield to save your life 10 times (any mode, any campaign act) | 10
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| Photojournalist | ||
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Submit a spectator photo (needs Xbox Live) | 10
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| Kick 'Em When They're Down | ||
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Perform all 11 unique executions on a downed enemy (this means you must do chainsaw, curb stomp, punches, shotgun, incapaction headshot, etc.) | 10
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Achievements added in the Flashback Map Pack[]
| Skeletons in your Closet | ||
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Complete waves 1 through 10 on all Flashback Map Pack maps in Horde (any difficulty) | 20
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| More Mystery, Less History | ||
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Win a multiplayer match on each of the 5 Flashback Map Pack maps (any mode except Wingman) | 15
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| Bound by a Shared Past | ||
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Win a Wingman match on each of the 5 Flashback Map Pack maps | 15
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Achievements added in the Combustible Map Pack[]
| Trial by, and on, Fire | ||
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Survive first 10 Horde waves on Combustible Map Pack maps as a team | 20
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| The Roof! The Roof! The Roof… | ||
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Win a multiplayer match on each of the 3 Combustible Map Pack maps (any mode except Wingman) | 15
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| Forged in the Fire | ||
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Win a Wingman match on each of the 3 Combustible Map Pack maps | 15
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| Annex: Now With Execution Rules | ||
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Win an Annex match on each Flashback and Combustible Map Pack map (public matches only) | 75
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Achievements added in the Snowblind Map Pack and Title Update 3[]
| Rookie Gear | ||
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Earn enough multiplayer experience to reach level 5 (public only) | 10
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| Seasoned Gear | ||
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Earn enough multiplayer experience to reach level 15 (public only) | 20
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| Battle-Tested Gear | ||
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Earn enough multiplayer experience to reach level 25 (public only) | 30
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| Battle-Hardened Gear | ||
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Earn enough multiplayer experience to reach level 50 play a match on each of the 4 Snowblind Map Pack maps (public only) | 50
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| Veteran Gear
| ||
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Earn enough multiplayer experience to reach level 100 win a match on each of the 4 Snowblind Map Pack maps (public only) | 75
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| Never Eat Red Snow | ||
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Complete waves 1 through 10 on all Snowblind Map Pack maps in horde | 20
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| Icy Dead People | ||
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Complete waves 1 through 50 on any Snowblind Map Pack maps in horde | 25
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| Frigid Body Dynamics | ||
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Play a multiplayer match on each of the 4 Snowblind Map Pack maps (any mode) | 5
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| The Weather Outside Is Lethal | ||
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Win a multiplayer match on each of the 4 Snowblind Map Pack maps (any mode) | 15
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Achievements added in the Dark Corners add-on[]
| My Way Or the Highway | ||
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Without being detected, complete the "Road to Ruin" deleted scene after choosing the stealth option | 25
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| Highway to Hell | ||
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Complete the "Road to Ruin" deleted scene after choosing the guns blazing option | 25
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| Two for the Road | ||
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Complete the "Road to Ruin" deleted scene in co-op as either Marcus or Dom | 25
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| Afraid of the Dark | ||
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Play a multiplayer match on each of the 7 Dark Corners Map Pack maps (any mode) | 20
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| Did Not Go Gentle | ||
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Win a multiplayer match on each of the 7 Dark Corners Map Pack maps (any mode) | 30
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| Be Careful What You Wish For | ||
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Reach level 8 in multiplayer and complete waves 1 - 10 on the War Machine map in Horde | 10
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| Ride It All Night Long | ||
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Reach level 10 in multiplayer and complete waves 1 - 10 on the Highway map in Horde | 10
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| No, But His Face Rings a Bell | ||
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Reach level 15 in multiplayer and complete waves 1 - 20 on the Sanctuary map in Horde | 15
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| Lost in Transition | ||
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Reach level 20 in multiplayer and complete waves 1 - 20 on the Way Station map in Horde | 20
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| Like Father, Like Gun | ||
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Reach level 30 in multiplayer and complete waves 1 - 30 on the Allfathers Garden map in Horde | 30
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| Am I Only Dreaming | ||
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Reach level 40 in multiplayer and complete waves 1 - 40 on the Memorial map in Horde | 40
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| Blood on the Sand | ||
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Reach level 50 in multiplayer and complete waves 1 - 50 on the Nowhere map in Horde | 50
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| Is It Hot or Is That Just You | ||
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Kill 25 Bloodmounts with a Scorcher while playing Horde on a Dark Corners Map Pack map | 25
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Trivia[]
The achievement, Ride It All Night Long likely refers to the song Life Is a Highway by Rascal Flatts.
The achievement, Blood On The Sand likely refers to the 2009 video game 50 Cent: Blood On the Sand.
The achievement, Highway To Hell refers to the ACDC song of the same name.
The achievement, Freebaird! likely refers to the song Freebird by Lynyrd Skynyrd.