Full list of all 75 Halo Wars: Definitive Edition achievements worth 1,500 gamerscore.
Achievements they've won
Achievements they've not won
Complete any Campaign Mission in Co-op Mode.
Disrupt 5 active Leader Powers in a single game on Blood River.
Get 20,000 points in any Skirmish Game.
Play Halo Wars for at least 24 Total hours.
Mission 1: Ram 50 Grunts with Warthogs.
Get a Gold Medal on every Campaign Mission.
Kill 20 enemy squads with a continuous Covenant Leader Power on Memorial Basin.
Hot drop 50 squads to your Covenant Leader in a single game on Barrens.
Use one of the 6 Major Leader Powers to destroy an enemy's last unit.
Finish all missions under Par Time on Heroic difficulty.
Get a Gold Medal with all Debuff Skulls Active.
Finish five missions under Par Time on Heroic difficulty.
Finish with 5000 net resources tributed to your teammates on Memorial Basin except in Deathmatch.
Score the winning point in a game of Keepaway against Legendary AI's.
Collect all Skulls.
Complete the Campaign on Heroic Difficulty.
Complete the Campaign on Legendary Difficulty.
Mission 13: Destroy 25 units with the Scarab.
Mission 15: Open the Doors in order.
Mission 14: Don't claim an extra base.
Unlock All Timeline Events.
Mission 12: Repair the Power Core in less than 4 minutes.
Obtain a lifetime campaign Score over 1,000,000.
Mission 10: Distrupt all Tractor Beams.
Collect 8 Skulls.
Mission 8: Use Elephants to train 100 infantry.
Mission 7: Do not destroy any Power Node.
Mission 5: Jack 6 Covenant Vehicles.
Mission 4: Save Adam.
Mission 3: Kill at least 5 Covenant Units with the Bridge.
Mission 2: Destroy every Methane Tank.
Collect your first Skull.
Win a Public game.
Win and have the highest score in a Public Game.
Finish one mission under Par Time on Heroic difficulty.
Win 100 Skirmish or Multiplayer Matches.
Win 75 Skirmish or Multiplayer Matches.
Win 50 Skirmish or Multiplayer Matches.
Win 40 Skirmish or Multiplayer Matches.
Win a Skirmish Game with Dual Scarabs.
Get a Scarab during a Reinforcement game.
Gain at Least 15 population from a single wave in a Reinforcement game.
Win a game on every Skirmish Map.
Win 30 Skirmish or Multiplayer Matches
Get a winning High Score with 10 or less Squads against the Heroic AI.
Win 20 Skirmish or Multiplayer Matches
Win a Heroic Skirmish Game against the AI in under 10 minutes.
Win a game in every Skirmish Game Mode.
Win 10 Skirmish or Multiplayer Matches
Win and never trail in a Tug of War game.
Win a 3v3 Skirmish game with 2 AI Allies.
Win a Skirmish Game with every Leader.
Unlock 20 Timeline Events.
Complete Mission 15 on any difficulty.
Complete Mission 14 on any difficulty.
Complete Mission 13 on any difficulty.
Complete Mission 12 on any difficulty.
Complete Mission 11 on any difficulty.
Mission 11: Save all the Airlocks.
Complete Mission 10 on any difficulty.
Complete Mission 9 on any difficulty.
Mission 9: Put every Colony in Hibernation Mode at the same time.
Complete Mission 8 on any difficulty.
Complete Mission 7 on any difficulty.
Complete Mission 6 on any difficulty.
Mission 6: Successfully protect every Rhino.
Improve your Score in any Campaign Mission.
Complete Mission 5 on any difficulty.
Complete Mission 4 on any difficulty.
Unlock a Timeline Event.
Complete Mission 3 on any difficulty.
Complete Mission 2 on any difficulty.
Get a Gold Medal on any mission.
Complete Mission 1 on any difficulty.