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!
Survived all 50 waves of Horde.
Earned the Silver "Number 1" medal.
Completed all campaign Acts on Hardcore Difficulty.
Completed all campaign Acts on Insane Difficulty.
Earned the Bronze "Force Multiplier" medal.
Executed your enemies with variety and style.
Completed the first 12 waves of Beast.
Earned the Bronze "Loot Courtesan" medal.
Wreaked vengence upon humanity!
Complete all Acts in Co-op on any difficulty.
Complete all Acts in 4 player Co-op on any difficulty.
Completed all campaign Acts on Casual or Normal Difficulty.
Killed Myrrah.
Rescued Adam Fenix from captivity.
Recovered all 42 Collectibles.
Recovered all 15 COG Tags.
Turned off the Maelstrom device.
Passed under the Maelstrom and found Azura.
Launched the sub.
Found enough fuel to get to Endeavor naval base.
Your respect for the dead earned you access to Griffin's special weapons stash.
Found and activated the fuel pump.
Completed 5 Arcade Campaign chapters in co-op.
Drove from Anvil Gate to Mercy.
Defeated the Lambent Berserker.
Defended Anvil Gate from the Locust siege.
Arrived safely, kinda, at Anvil Gate.
Recovered 20 of 42 Collectibles.
Grabbed a Locust Gas Barge to travel to Anvil Gate.
Discovered the location of Adam Fenix.
Completed one match in all six Versus multiplayer modes.
Maxed the Consecutive Match Bonus in Versus multiplayer.
Killed 10 enemies in Team Deathmatch.
Blew up the Lambent Leviathan from the bridge.
Defended and escaped from Cougar Stadium.
Survived the first 10 waves of Horde.
Found food and ammo in Hanover.
Recovered 5 of 42 Collectibles.
Reached level 50.
Defended the Raven's Nest from Lambent Leviathan.
Reached level 25.
Executed an infected player and is now turning Lambent.
Reached level 15.
Earned the Onyx "War Supporter" medal.
Earned an Onyx medal.
Reached level 5.
Reached level 10.
Woke up from a bad dream.
Your skill and experience means you’re ready for Standard Versus multiplayer.
Found new places to destroy all humans.
Showed your friends the Horde Command Pack sights.
We are the elite Onyx Guard!
Good ROI on that Silverback upgrade.
The Hammer of Dawn is now online!
Honored the memory of Zeta Squad in 10 matches of Versus.
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.
Completed "RAAM's Shadow" in Arcade Campaign.
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.
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.
Defeated the first 10 waves of Horde with every member of Zeta in your party.
Completed all 50 waves of Horde on any of the Fenix Rising maps.
Level 100 - so nice, I did it twice.
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).
Level 100 and going back for more!
Earned all 132 combat ribbons.
The $!*@# was taken down with extreme force.
Maxed out all of the Horde fortifications.
Completed all 12 waves of Beast on all Forces of Nature maps.
Completed all 50 waves of Horde on any of the Forces of Nature maps.
Still standing after 20 waves - you're a natural!
Cleaved 25 enemies with a hidden weapon.
Guardian is back!
Led by example and killed 10 opponents as Guardian leader.
Captured and "released" 20 opponents as the Savage Hunter.
Found the right man for the job!