Full list of all 181 Gears 5 achievements worth 2,500 gamerscore. It takes around 1000 hours to unlock all of the achievements in the base game on Xbox One.
The base game contains 68 achievements worth 1,000 Gamerscore, and there are 7 DLC packs containing 113 achievements worth 1,500 Gamerscore.
Completed all Acts of the Campaign on Insane
Used Jack's STIM upgraded ability to revive a DBNO friendly in Campaign
Completed an Act of Campaign in 3-player co-op
Created and published an Escape Hive
Completed all Acts of the Campaign (Any difficulty)
Got back to the New Ephyra wall
Planted the last beacon in the Old Ephyra ruins
Survived the Kraken fight
Assembled the UIR Hammer of Dawn rocket
Secured the UIR rocket
Executed 100 Rejects (any mode)
Reached Character Level 15 with Infiltrator, Demolitions, Mechanic, Veteran, Marksman OR Jack
Reached Level 5 with an ally in Gears Allies
Completed 5 Matches in a Competitive playlist
Got 5 kills while inside Hivebuster Venom
Secured the UIR satellites
As a team, collected Power from all 4 Power Taps within one wave of Horde
Won 5 matches of Arcade
Reached the rank of General in Tour of Duty
Reached the rank of Captain in Tour of Duty
Killed the Matriarch
Used the Comm Towers to locate the hidden facility
Opened the old COG gate in Kadar Valley
Re-upped!
Reached the rank of Lieutenant in Tour of Duty
Completed a Featured community built Escape Hive
Reached the rank of Sergeant in Tour of Duty
Found a way into New Hope
Saved the Riftworm village
Headshot the Swarmak at the theatre
Beat 50 Consecutive Waves of Horde (any difficulty)
Made a new Ally in Gears Allies
Reached the rank of Corporal in a Tour of Duty
Completed 3 Objectives for Tour of Duty in a day
Played a match of Arcade
Reinforced Carmine at the Plaza
Used Jack's Flash ability to stun 3 enemies at once in Campaign
Killed a Sire while it's kidnapping a teammate (any mode)
Got a kill with 3 Perks active in Horde
Upgraded Del's New Best Friend
Launched the Rocket
Completed Boot Camp
Get a kill with ricochet bullets using Jack's Barrier Ability
Use Jack's Shock Trap ability to shock 6 enemies at once in Campaign
Scavenge supplies from all fallen Condors in Act 2 and Act 3
Pass through a refuge shower with 3 Hivebusters in the same shower cubicle
Complete a Versus match with a team of four Level 5 Gears Allies
Insane Campaign, Master Horde & Escape Launch Maps & Characters, 20 Re-ups, General in Tour
Get a kill with a Hijacked Pouncer, Warden, Stump and Elite Hunter in Campaign
Complete an Act of the Campaign as playable Jack (any difficulty)
Acquire all of Jack's Ultimate upgrades in Campaign
Use Jack's Cloak ability to cloak and execute 3 enemies before de-cloaking in Campaign
Fully upgrade Jack's Abilities and Passives in Campaign
Use Jack's Fetch ability to acquire each Heavy Weapon in Campaign
Equip 3 Relic Weapons at one time in Campaign
Kill an enemy with every Relic Weapon in Campaign
Reach Character Level 15 with Tactician, Anchor and Blademaster Class
Reach Character Level 15 with either Tactician, Anchor or Blademaster Class
Complete a Launch Hive on each difficulty (The Hive, The Descent, The Gauntlet or The Mines)
Complete 5 Escape Hives as each one of Mac, Lahni and Keegan
Complete an Escape Hive without firing a shot on Master Difficulty
Inflict 9000 damage in Escape while 3 Ultimate Abilities are active
Reach Character Level 15 with Infiltrator, Demolitions, Mechanic, Veteran, Marksman and Jack
As Jack, convert one of each weapon to Power using the Forge in Horde
Kill a Boss in Horde while all 5 players have active Ultimate Abilities
Switch characters in an Arcade match and kill an opponent who previously killed you
Win 25 Ranked matches in one Competitive Season
Collect all Campaign Collectibles
Re-upped 5 Times
Won a Versus round on every customized map piece in Allfathers Arena (9)
Completed a Versus Match on Allfathers Arena, Lift, Mid, Boxes, Nethercutt, Pit & Core
Reached Character Level 15 with Combat Medic, Pilot, Gunner, Robotics Expert or Brawler
Killed 200 enemies using the Silverback in Horde
Won a match of Gridiron and kept your opponents scoreless
Placed first in a Match of Free For All
Were 10 kills behind the leader of a Free For All round, then came back to win
Used the Scrubber Room to slow down the Venom in Escape
Escaped a Hive with a team of COG Soldier, Lizzie Carmine, Clayton Carmine, Baird or Cole
Defeated the Matriarch in Escape using the Relic Dropshot
Executed both members of the enemy team within a round of 2vs2 Gnashers
Escaped a Hive with Lizzie Carmine, Clayton Carmine, Baird or Cole
Completed 50 Waves of Horde with Mac, Keegan and Lahni in your squad
Won a Match of Arcade Blitz where the opposition team is within 25 points of winning
Defeated 10 different opponents in a Free For All Match
Completed a Match of Free For All, Arcade Blitz and Gridiron
Won a Match of Arcade Blitz with the most Points earned in a Ring
Completed a Match of Arcade Blitz as a Hero or Villain from Operation 2 or Operation 3
Scored a Touchdown with the Flag in Gridiron
Completed 50 Consecutive Waves of Horde with Lizzie Carmine, Clayton Carmine, Baird or Cole
Acquired Character Skins for 3 different post launch Characters
Win 10 Competitive Matches of 2vs2 Gnashers
Defeat an opponent with every Pickup Weapon in a single Free For All Match
Master an Operation 2 Escape Hive and Horde Map
Master an Operation 3 Escape Hive and Horde Map
Acquire 30 Skill Cards of Level 3 or above
Re-up 10 Times
Re-up 20 Times
Re-up 30 Times
Escape all Operation 2 Hives on Experienced Difficulty or Higher
Escape all Operation 3 Hives on Experienced Difficulty or Higher
Unlocked a reward in any Competitive playlist
Woke-up in the Med bay while escaping a Hive in Escape
Completed a Versus match on Reactor, Blood Drive & Checkout
Won a match of Gridiron with an Operation 4 Hero or Villain
Got a Denial on an Enemy while they were inside your Endzone with the flag in Gridiron Mode
Killed an enemy using a planted Grenade in Gridiron mode
Completed a Featured Horde Map from Operation 4
Won a Match of Horde Frenzy (any difficulty)
Completed 12 consecutive waves of Horde Frenzy with Baird & Paduk in your Squad
Escape a Hive with Paduk
Acquire any Weapon from the Fabricator in Escape
Escape all Operation 4 Hives on Experienced Difficulty or Higher
Complete all Year One Escape Hives
Win a Match of Horde Frenzy on Master Difficulty
Master All Featured Horde Maps from Operation 4
Deal 30,000,000 damage in Versus
Deal 100,000,000 damage in Versus
Kill 25,000 enemies in Versus
Kill 100,000 enemies in Versus
Get 12,500 assists in Versus
Get 50,000 assists in Versus
Re-up 40 Times
Reach Character Level 15 with 10 Characters
Master an Escape Hive and Horde Map from Operation 4
Killed 100 enemies using Brawler Class Flame Ability & Flame Skill Cards in Horde or Escape
Complete 60 Waves of Horde Frenzy on Insane or Higher
Eliminate 25,000 enemies in Horde or Escape
Eliminate 100,000 enemies in Horde or Escape
Deal 60,000,000 damage in Horde or Escape
Deal 200,000,000 damage in Horde or Escape
Kill 100 enemies using Gunner Class Reflect ability in Horde or Escape
Kill 100 enemies under the effect of Nomad's Fear ability, as Nomad Class, in Horde or Escape
Won 5 matches with the Vrol character
Won 10 matches of Execution
Won 5 matches with Bernie COG character
Won a Versus match on Ritual
Won a Versus match on Tomb
Won a Versus match on Ephyra
Won a Control and/or KOTH match on 10 different maps
Reach Legend 25 in an Operation
Reach Re-Up 50
Reach Re-Up 60
50 Re-Ups, Inconceivable Campaign, Master All hives & Horde Maps , All Classes at Level 20
Win 10 matches in Versus Events
Complete a match of Horde Frenzy on Atrium
Complete a match of Horde Frenzy on Command
Complete a match of Horde Frenzy on Turbine
Do 400,000,000 damage in Horde or Escape
Completed all chapters on Inconceivable difficulty
Completed all chapters in Ironman Mode on Experienced difficulty or above
Completed all chapters in one Act while Batista as Marcus is enabled
Killed 10 enemies using a weapon with a Custom Skin
Completed a chapter of Campaign while using a Custom Skin
Completed a Versus match in each of Regency, River, Nexus, Clocktower, and Gridlock
Own 360 weapon skins
Got 100 eliminations in Nexus
Got 2000 points in a Competitive match from eliminations
Got 1000 points in a Competitive match from ring breaks
Got an elimination with the Scorcher
Own 50 character skins
Reached level five on any one Assault, one Tank and one Support
Max out each of the Anchor, Gunner, Pilot, Veteran, Brawler classes
Win a Ranked match in each of Regency, River, Nexus, Clocktower, and Gridlock
Collect one Heroic skin
Collect 20 Epic character skins
Beat the Gold Time in a Featured Escape
Activated Resupply ability 25 times in the Hivebuster Campaign Expansion as Keegan
Killed 50 enemies through your Barrier Ability in the Hivebuster Campaign Expansion as Mac
Activated Keegan, Lahni and Mac's Abilities in the Hivebuster Campaign Expansion
Killed 50 enemies using Lahni's Electroblade Ability in the Hivebuster Campaign Expansion as Lahni
Completed all Chapters of the Hivebusters DLC on Insane
Collected all Campaign Collectibles in the Hivebusters DLC
Found all Character Ability upgrades in the Hivebusters DLC
Completed the Hivebusters DLC in 3-Player Co-Op (Scorpio squad, dupes not allowed)
Completed all Chapters of the Hivebusters DLC (any difficulty)
Defeated the Wakaatu
Opened up the Spirit Walk on Pahanu
Saved Hana from the Snatcher
Arrived on Weilehi
Escaped the Swarm-infested Sanctum
Arrived at Sanctum to infiltrate the Heart of the Hive