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