There are 60 achievements with a total of 1060 points.

This war is over 0 Complete the Campaign	30
It just keeps going 0 Beat wave 25 in Blitz Firefight	30
Wake up 0 Complete The Signal	10
A history of decimation 0 Complete A New Enemy	10
Dominated 0 Complete Ascension	10
Guerilla tactics 0 Complete One Three Zero	10
Stirring the pot 0 Complete The Cartographer	10
All travel is suspended 0 Complete Lights Out	10
Behind enemy lines 0 Complete From the Deep	10
The setup … 0 Complete Hold the Line	10
And the knockout punch 0 Complete Under the Dark	10
Fifth floor: Tools, Guns, Super Weapons 0 Complete The Foundry	10
Sentinel size matters 0 Complete The Halo	10
Last stop, this town 0 Complete Last Stand	10
Learn the ropes 0 Complete the Basic standalone tutorial	10
Know the ropes 0 Complete the Advanced standalone tutorial	10
Two heads are better than one 0 Complete a mission in co-op	10
The hard fight 0 Complete the Campaign on Heroic	40
Surviving the long war 0 Complete the Campaign on Legendary	60
Palmer's Pure Gold 0 Earn a gold medal on every mission (except Prologue) on any difficulty	30
Gold rush 0 Earn a gold medal on any mission (except Prologue) on any difficulty	20
Lone Wolf 0 Complete any mission (except The Signal) solo on Legendary with all skulls activated	40
Comrades in arms 0 Earn a gold medal on any mission (except Prologue) in Co-op on Legendary	20
A little bit extra 0 Complete half of the Campaign bonus objectives	10
A lot extra 0 Complete all the Campaign bonus objectives	20
Alas, poor Yorick! 0 Collect a Skull	10
Morbid curiosities 0 Collect half of the Skulls	20
Collecting a dream 0 Collect all the Skulls	30
The Scrappy Six 0 Complete a Multiplayer match as each of the 6 launch leaders (Matchmaking only)	20
First steps 0 Complete a Multiplayer match (Matchmaking only)	10
Natural intelligence 0 Play a Skirmish match alone against only AI opponents (1 or more)	10
Two heads are better than none 0 Win a Skirmish match with a friend against only AI opponents (2 or more)	10
You've got a case of the Birley 0 In a 1v1 Skirmish against Legendary AI, recycle your base in the first 5 minutes and then win	20
The rank and file 0 Recruit or construct 1 of each UNSC unit in Multiplayer or Skirmish (Launch units only)	10
The tribe 0 Recruit or construct 1 of each Banished unit in Multiplayer or Skirmish (Launch units only)	10
Trash compactor 0 Destroy 100 vehicles with anti-vehicle units (Multiplayer, Skirmish or Blitz)	20
Flyswatter 0 Destroy 100 air units with anti-air units (Multiplayer, Skirmish or Blitz)	20
Meat grinder 0 Kill 100 infantry with anti-infantry units (Multiplayer, Skirmish or Blitz)	20
Spare change 0 Spend 5 Leader Points in Multiplayer or Skirmish	10
Big Spender 0 Spend 100 Leader Points in Multiplayer or Skirmish	30
Space Healer 0 Cast 100 Healing Leader Powers (Multiplayer, Skirmish or Blitz)	30
Overkill 0 Destroy 500 units with Leader Powers (Multiplayer, Skirmish or Blitz)	30
The hand that feeds 0 Kill a unit owned by a developer or someone who has this achievement	20
Making the most of the day 0 Complete 3 Daily Challenges in one day	10
A strong showing for the week 0 Complete a set of 3 Weekly Challenges in one week	10
Short-term commitment 0 Complete at least 1 Daily Challenge each day for a week	20
Long-term commitment 0 Complete at least 1 Weekly Challenge each week for a month	30
Duellist 0 Win your first Blitz match (Matchmaking only)	10
Ante-up 0 Complete the Blitz tutorial	10
Card shark 0 Complete 25 Blitz matches (Matchmaking only)	20
Full house 0 Complete Blitz matches as each of the 6 launch leaders (Matchmaking only)	10
All or nothing 0 Play all cards in your deck at least once in a single Blitz match	10
Stacked the chips 0 Gather 150 Energy Crates over any number of Blitz matches	10
Jackpot 0 Play 777 total Blitz cards over any number of matches	40
Firefighter 0 Beat wave 10 in Blitz Firefight	10
On fire 0 Score 500,000 points in a single Blitz Firefight	20
Paint it red 0 Achieve the highest possible kill-streak in any Blitz mode	10
Just the facts 0 Collect half of the Campaign logs	20
The full story 0 Collect all the Campaign logs	30
Some light reading 0 Find a Campaign log	10

Halo Wars 2: Leader Sergeant Johnson

There are 3 achievements with a total of 30 points.

Our big green style 0 Win 3 matches as Sgt. Johnson (Multiplayer, Skirmish or Blitz)	10
For a brick, he flew pretty good! 0 Kill 50 infantry units with the Colossus' Stomp ability (Multiplayer, Skirmish or Blitz)	10
…and I don't do bits and pieces 0 Use Repair Beacon special ability 15 times. (Multiplayer, Skirmish or Blitz)	10

Halo Wars 2: Leader Forge

There are 3 achievements with a total of 30 points.

Bear necessities 0 Build 10 Grizzlies (Multiplayer, Skirmish or Blitz)	10
Heroes never die 0 Win 3 matches as Forge (Multiplayer, Skirmish or Blitz)	10
Man-to-freak communication 0 Kill 50 units with Forge's Warthog (Multiplayer, Skirmish or Blitz)	10

Halo Wars 2: Leader Kinsano

There are 3 achievements with a total of 30 points.

I don't want to set the world on fire 0 Burn 50 infantry with Kinsano's Flamewall ability (Multiplayer, Skirmish or Blitz)	10
The roof is on fire 0 Kill 100 units with Inferno (Multiplayer, Skirmish or Blitz)	10
Twisted Firestarter 0 Win 3 matches as Morgan Kinsano (Multiplayer, Skirmish or Blitz)	10

Halo Wars 2: Leader Colony

There are 3 achievements with a total of 30 points.

Hunter/Hunted 0 Taunt 50 vehicles with the Hunter Captain's ability (Multiplayer, Skirmish or Blitz)	10
Turrets everywhere 0 Attach 50 skitterers to units (Multiplayer, Skirmish or Blitz)	10
Two minds are better than one 0 Win 3 matches as Colony (Multiplayer, Skirmish or Blitz)	10

Halo Wars 2: Operation Spearbreaker

There are 5 achievements with a total of 40 points.

Vidmaster Challenge: 100 drops 0 Gain a gold medal and complete all objectives in ‘Gatecrashers’ on legendary	5
Vidmaster Challenge: No fly zone 0 Gain a gold medal and complete all objectives in ‘Not On My Watch’ on legendary	5
Spear: Broken 0 Complete Operation: Spearbreaker on any difficulty	5
Send in the experts 0 Complete Operation: Spearbreaker on Heroic difficulty	10
We go feet first! 0 Complete Operation: Spearbreaker on Legendary difficulty	15

Halo Wars 2: Arbiter Leader Pack

There are 3 achievements with a total of 30 points.

Trials of the Arbiter 0 Win 3 matches as The Arbiter (Multiplayer, Skirmish or Blitz)	10
None shall escape 0 Kill 20 air units with the Arbiter while raging (Multiplayer, Skirmish, or Blitz)	10
Time and place 0 Trap 100 units with Stasis (Multiplayer, Skirmish, or Blitz)	10

Halo Wars 2: Commander Jerome Leader Pack

There are 3 achievements with a total of 30 points.

You've been busy 0 Win 3 matches as Commander Jerome (Multiplayer, Skirmish, or Blitz)	10
And my shadow 0 Kill 25 units with Jerome's Command Mantis unit. (Multiplayer, Skirmish, or Blitz)	10
Alpha and Omega 0 Hijack 40 vehicles with Omega Team members (Multiplayer, Skirmish, or Blitz)	10

Halo Wars 2: Serina Leader

There are 3 achievements with a total of 30 points.

Nothing too difficult, then? 0 Win 3 matches as Serina (Multiplayer, Skirmish or Blitz)	10
Freeze! 0 Freeze 50 squads with Cryo Abilities (Multiplayer, Skirmish or Blitz)	10
Insult upon injury 0 Shatter 20 squads that have been Frozen. (Multiplayer, Skirmish or Blitz)	10

Halo Wars 2: Yapyap Leader

There are 3 achievements with a total of 30 points.

You met me on Reach! 0 Win 3 matches as Yapyap (Multiplayer, Skirmish or Blitz)	10
Piggyback! 0 Activate the Grunt Goblin charge 10 times. (Multiplayer, Skirmish or Blitz)	10
That sweet smell of home 0 Fire 15 methane shells from the Methane Wagon. (Multiplayer, Skirmish or Blitz)	10

Halo Wars 2: Awakening the Nightmare

There are 38 achievements with a total of 415 points.

Spreading Darkness 0 Win 3 matches as Voridus (Multiplayer, Skirmish or Blitz)	10
Cataclysmic 0 Kill 50 units with Cataclysm (Multiplayer, Skirmish, or Blitz)	10
Revel in Destruction 0 Use Invigorating Frenzy 50 times	10
Unbreakable 0 Win 3 matches as Pavium (Multiplayer, Skirmish or Blitz)	10
Marked for Death 0 Paint units using Pavium or Orbital Designator 30 times (Multiplayer, Skirmish, or Blitz)	10
The Long Game 0 Kill 50 units with Mega Turrets (Multiplayer, Skirmish, or Blitz)	10
Smash! 0 Gain a gold medal and complete all objectives in ‘What Could Go Wrong?’	10
Serving a New Master 0 Complete 'What Could Go Wrong?' on any difficulty	5
Hold the Line(s) 0 Gain a gold medal and complete all objectives in ‘Fighting Retreat’	10
The Wave Breaks 0 Complete 'Fighting Retreat' on any difficulty	5
The Wave Breaks 0 Complete 'Fighting Retreat' on any difficulty	5
Hidden Power 0 Gain a gold medal and complete all objectives in ‘Light the Fuse’	10
Tapped 0 Complete 'Light the Fuse' on any difficulty	5
We Got This 0 Reach the final room of The Archive without calling in reinforcements from the teleporters.	5
Nimble, for a Big Fella 0 Navigate the laser defenses in The Archive without losing any units on Heroic or above.	5
Have You Tried Rebooting? 0 Complete 'The Archive' on any difficulty	5
Before This Gets Out of Hand 0 Complete 'Manifestation' without the Proto-Gravemind exceeding 50% critical mass	10
Clean up your Mess 0 Complete 'Manifestation' on any difficulty	5
Banished Prowess 0 Beat any level on legendary in par time with a scoring skull active (AtN only)	15
The Brute Side 0 Collect every Phoenix Log collectable in 'Awakening the Nightmare'	10
Awake 0 Complete the 'Awakening the Nightmare' campaign on any difficulty	30
Again with the Tentacles 0 Complete the 'Awakening the Nightmare' campaign on Heroic or higher	40
The Ancient Enemy 0 Complete the 'Awakening the Nightmare' campaign on Legendary	50
Watch My Six 0 Complete wave 20 in co-op as a UNSC/Banished partnership (Terminus Firefight)	10
Outflood the Flood 0 Build and hold a minibase on every slot of a map at the same time (Terminus Firefight)	15
Ka-Ching! 0 Destroy 20 bonus drops in a single game (Terminus Firefight)	10
High Maintenance 0 Build 50 barricades in a single game (Terminus Firefight)	5
Turret Farmer 0 Build 50 turrets in a single game (Terminus Firefight)	5
Pristine 0 Prevent the Terminus from taking any damage for 15 waves (Terminus Firefight)	5
Walled In 0 Have a wall built on every plot of the map at the same time (Terminus Firefight)	5
Survivor 0 Finish wave 5 without training additional units (Terminus Firefight)	5
Terminus Defender 0 Get an individual score of 500,000 (Terminus Firefight)	5
Terminus Tactician 0 Get an individual score of 1,000,000 (Terminus Firefight)	10
Terminus Teamwork 0 Get an total score of 2,000,000 (Terminus Firefight)	5
Terminus MVPs 0 Get an total score of 5,000,000 (Terminus Firefight)	10
Garrison 0 Finish wave 10 (Terminus Firefight)	5
Fortress 0 Finish wave 30 (Terminus Firefight)	20
Barricade 0 Finish wave 20 (Terminus Firefight)	15