Full list of all 82 Gears of War 3 achievements worth 2,000 gamerscore. It takes around 1000 hours to unlock all of the achievements in the base game.
The base game contains 50 achievements worth 1,000 Gamerscore, and there are 7 DLC packs containing 32 achievements worth 1,000 Gamerscore.
Executed your enemies with variety and style.
Reached level 50.
Your respect for the dead earned you access to Griffin's special weapons stash.
Completed 5 Arcade Campaign chapters in co-op.
Recovered all 42 Collectibles.
Recovered all 15 COG Tags.
Survived all 50 waves of Horde.
Earned the Bronze "Loot Courtesan" medal.
Survived the first 10 waves of Horde.
Wreaked vengence upon humanity!
Completed one match in all six Versus multiplayer modes.
Completed all campaign Acts on Insane Difficulty.
Earned an Onyx medal.
Complete all Acts in Co-op on any difficulty.
Maxed the Consecutive Match Bonus in Versus multiplayer.
Reached level 25.
Recovered 20 of 42 Collectibles.
Recovered 5 of 42 Collectibles.
Completed the first 12 waves of Beast.
Reached level 15.
Executed an infected player and is now turning Lambent.
Killed 10 enemies in Team Deathmatch.
Reached level 10.
Completed all campaign Acts on Casual or Normal Difficulty.
Completed all campaign Acts on Hardcore Difficulty.
Killed Myrrah.
Rescued Adam Fenix from captivity.
Turned off the Maelstrom device.
Passed under the Maelstrom and found Azura.
Launched the sub.
Found enough fuel to get to Endeavor naval base.
Found and activated the fuel pump.
Drove from Anvil Gate to Mercy.
Defeated the Lambent Berserker.
Defended Anvil Gate from the Locust siege.
Arrived safely, kinda, at Anvil Gate.
Grabbed a Locust Gas Barge to travel to Anvil Gate.
Reached level 5.
Discovered the location of Adam Fenix.
Blew up the Lambent Leviathan from the bridge.
Defended and escaped from Cougar Stadium.
Found food and ammo in Hanover.
Defended the Raven's Nest from Lambent Leviathan.
Woke up from a bad dream.
Your skill and experience means you’re ready for Standard Versus multiplayer.
Complete all Campaign Acts in 4 player Co-op (any difficulty, Standard or Arcade).
Earn the Bronze "Force Multiplier" medal.
Earn the Silver "Number 1" medal.
Reach level 100 and earn every Onyx medal.
Earn the Onyx "War Supporter" medal.
We are the elite Onyx Guard!
Showed your friends the Horde Command Pack sights.
Found new places to destroy all humans.
Good ROI on that Silverback upgrade.
The Hammer of Dawn is now online!
As RAAM, made sure Minh never forgets that day outside the House of Sovereigns.
Showed 50 Locusts the meaning of sky-fire with HOD Command Center.
Used the Mauler shield to kill 10 Gears that had the temerity to fire upon you and your General.
Honored the memory of Zeta Squad in 10 matches of Versus.
Ignored all Loader safety guidelines and killed 10 Locusts.
Completed "RAAM's Shadow" in Standard Campaign.
As RAAM, ripped 50 Gears to shreds with your Kryll.
Complete "RAAM's Shadow" in Arcade Campaign on any difficulty.
Complete "RAAM's Shadow" in 4 player co-op in either Arcade or Standard mode.
Defeated the first 10 waves of Horde with every member of Zeta in your party.
Level 100 and going back for more!
Won a Versus multiplayer match as a team of five Savage Marauders (any mode).
Won a Versus multiplayer match as a team of five Recruit Claytons (any mode).
Completed all 12 waves of Beast on all Fenix Rising maps.
Complete all 50 waves of Horde on any of the Fenix Rising maps.
Achieve level 100 a second time and choose to re-up for another tour.
Earn at least one of each of the original 132 combat ribbons.
Guardian is back!
Captured and "released" 20 opponents as the Savage Hunter.
Maxed out all of the Horde fortifications.
Still standing after 20 waves - you're a natural!
The $!*@# was taken down with extreme force.
Completed all 50 waves of Horde on any of the Forces of Nature maps.
Cleaved 25 enemies with a hidden weapon.
Found the right man for the job!
Completed all 12 waves of Beast on all Forces of Nature maps.
Kill 10 opponents as the leader in a round of Guardian on a Forces of Nature map.