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.
You are the ultimate Gear!
Earned the Onyx "War Supporter" medal.
Recovered all 42 Collectibles.
Recovered all 15 COG Tags.
Completed all campaign Acts on Hardcore Difficulty.
Completed all campaign Acts on Insane Difficulty.
Complete all Acts in 4 player Co-op on any difficulty.
Complete all Acts in Co-op on any difficulty.
Reached level 50.
Earned the Silver "Number 1" medal.
Your respect for the dead earned you access to Griffin's special weapons stash.
Earned the Bronze "Force Multiplier" medal.
Completed 5 Arcade Campaign chapters in co-op.
Completed all campaign Acts on Casual or Normal Difficulty.
Killed Myrrah.
Rescued Adam Fenix from captivity.
Turned off the Maelstrom device.
Survived all 50 waves of Horde.
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.
Recovered 20 of 42 Collectibles.
Drove from Anvil Gate to Mercy.
Defeated the Lambent Berserker.
Defended Anvil Gate from the Locust siege.
Executed your enemies with variety and style.
Arrived safely, kinda, at Anvil Gate.
Grabbed a Locust Gas Barge to travel to Anvil Gate.
Discovered the location of Adam Fenix.
Blew up the Lambent Leviathan from the bridge.
Defended and escaped from Cougar Stadium.
Recovered 5 of 42 Collectibles.
Found food and ammo in Hanover.
Defended the Raven's Nest from Lambent Leviathan.
Woke up from a bad dream.
Earned the Bronze "Loot Courtesan" medal.
Reached level 25.
Completed one match in all six Versus multiplayer modes.
Reached level 15.
Earned an Onyx medal.
Survived the first 10 waves of Horde.
Maxed the Consecutive Match Bonus in Versus multiplayer.
Reached level 10.
Killed 10 enemies in Team Deathmatch.
Reached level 5.
Completed the first 12 waves of Beast.
Wreaked vengence upon humanity!
Executed an infected player and is now turning Lambent.
Your skill and experience means you’re ready for Standard Versus multiplayer.
Found new places to destroy all humans.
We are the elite Onyx Guard!
Showed your friends the Horde Command Pack sights.
Good ROI on that Silverback upgrade.
The Hammer of Dawn is now online!
Completed "RAAM's Shadow" in 4 player co-op.
Used the Mauler shield to kill 10 Gears that had the temerity to fire upon you and your General.
Completed "RAAM's Shadow" in Standard Campaign.
Ignored all Loader safety guidelines and killed 10 Locusts.
Completed "RAAM's Shadow" in Arcade Campaign.
Honored the memory of Zeta Squad in 10 matches of Versus.
Showed 50 Locusts the meaning of sky-fire with HOD Command Center.
As RAAM, ripped 50 Gears to shreds with your Kryll.
As RAAM, made sure Minh never forgets that day outside the House of Sovereigns.
Defeated the first 10 waves of Horde with every member of Zeta in your party.
Level 100 - so nice, I did it twice.
Level 100 and going back for more!
Completed all 50 waves of Horde on any of the Fenix Rising maps.
Completed all 12 waves of Beast on all Fenix Rising maps.
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).
Earned all 132 combat ribbons.
Cleaved 25 enemies with a hidden weapon.
Captured and "released" 20 opponents as the Savage Hunter.
Guardian is back!
Completed all 12 waves of Beast on all Forces of Nature maps.
Led by example and killed 10 opponents as Guardian leader.
The $!*@# was taken down with extreme force.
Completed all 50 waves of Horde on any of the Forces of Nature maps.
Still standing after 20 waves - you're a natural!
Found the right man for the job!
Maxed out all of the Horde fortifications.