Full list of all 142 War for the Overworld achievements.
The base game contains 54 achievements, and there are 4 DLC packs containing 88 achievements.
Destroy all Empire Gateways on level 5
Complete level 4 in 18 minutes
Complete level 3 in 16 minutes
Complete level 3 before the final wave spawns
Complete level 2 in 10 minutes
Locate the hidden Artefact on level 2
Complete level 1 in 5 minutes
Build a 5x5 Barracks, Lair and Slaughterpen on level 1
Complete level 13
Complete level 12
Complete level 12 without using the Unleash Kenos Ritual
Complete level 11
Complete level 10
Complete level 9
Let no Empire units leave the second outpost on level 9
Complete level 8
Complete level 7
Complete level 6
Free all prisoners on level 6
Complete level 5
Complete level 5 in 18 minutes
Complete level 4
Claim all 3 Siege Shrines on level 4
Complete level 3
Complete level 2
Complete level 1
Complete level 6 in 30 minutes
Complete level 7 in 35 minutes
Complete level 8 in 10 minutes
Complete level 9 in 38 minutes
Complete level 10 in 30 minutes
Complete level 11 in 10 minutes
Complete level 12 in 50 minutes
Complete level 13 in 35 minutes
Convert 50 Empire units to your cause on level 7
Defile all 7 boss Crypts on level 8
Destroy all Inhibitors on your own on level 10
Lose less than 10 units on level 11
Complete level 13 without completing any optional objectives
Beat Rhaskos on Hard difficulty on any official 1v1 Skirmish map
Beat Korvek on Hard difficulty on any official 1v1 Skirmish map
Beat Kasita on Hard difficulty on any official 1v1 Skirmish map
Beat Mira on Hard difficulty on any official 1v1 Skirmish map
Beat Draven on Hard difficulty on any official 1v1 Skirmish map
Beat Marcus on Hard difficulty on any official 1v1 Skirmish map
Beat Oberon on Hard difficulty on any official 1v1 Skirmish map
Beat any AI on Master difficulty on any official 1v1 Skirmish map
Visit the Home Realm for at least 10 minutes after every single level (to hear all of Mendechaus' wisdom)
Spend a total of 5 hours in your Home Realm
Play the game during its Chinese release in 2017, or during Chinese New Year celebrations each year
Play the game in May 2019 to celebrate its Japanese release and the Hanami festival, or during April each year
Defeat Lord Saffire in Heart of Gold
Complete level 4 of Heart of Gold
Defeat Lord Coleem in Heart of Gold
Complete level 3 of Heart of Gold
Stop the Empire from mining more than 100,000 gold before you complete the Colossus in level 3 of Heart of Gold
Gather 500,000 gold in 20 minutes in level 3 of Heart of Gold
Complete level 2 of Heart of Gold
Complete level 1 of Heart of Gold
Find and rescue all Neutral units in level 1 of Heart of Gold
Complete level 1 of Heart of Gold without losing any Sentinels
Destroy all 4 Gateways within 30 minutes in level 1 of Heart of Gold
Unlock all 12 artefacts in 40 minutes in level 2 of Heart of Gold
Complete level 2 of Heart of Gold without the Empire patrols discovering you
Complete level 2 of Heart of Gold without allowing any Empire patrols to reach the end of the road
Use the Blood Money spell 100 times in level 3 of Heart of Gold
Destroy all 5 Inhibitors in 25 minutes in level 4 of Heart of Gold
Defeat every member of House Magnanimous in level 4 of Heart of Gold
Defeat every member of House Magnanimous and complete level 4 of Heart of Gold without destroying any of the Gateways
Reach wave 25 in Crucible mode on any map and challenge
Reach wave 50 in Crucible mode on any map and challenge
Reach wave 75 in Crucible mode on any map and challenge
Score 150,000 points on Ponygrasp (My Pet Dungeon level)
Complete the Ponygrasp bonus objectives (My Pet Dungeon)
Complete the Snowhope bonus objectives (My Pet Dungeon)
Score 150,000 points on Snowhope (My Pet Dungeon level)
Score 150,000 points on Goldrust (My Pet Dungeon level)
Score 150,000 points on Frostfossil (My Pet Dungeon level)
Score 150,000 points on Justice (My Pet Dungeon level)
Complete the Hell's Deep bonus objectives (My Pet Dungeon)
Complete Hell's Deep (My Pet Dungeon level)
Complete Snowhope (My Pet Dungeon level)
Complete Ponygrasp (My Pet Dungeon level)
Complete Frostfossil (My Pet Dungeon level)
Complete the Frostfossil bonus objectives (My Pet Dungeon)
Complete the Lockshackle bonus objectives (My Pet Dungeon)
Complete Lockshackle (My Pet Dungeon level)
Complete Justice (My Pet Dungeon level)
Complete the Justice bonus objectives (My Pet Dungeon)
Complete Goldrust (My Pet Dungeon level)
Complete the Goldrust bonus objectives (My Pet Dungeon)
Score 100,000 points on Deepwater (My Pet Dungeon level)
Complete Deepwater (My Pet Dungeon level)
Complete the Deepwater bonus objectives (My Pet Dungeon)
Score 150,000 points on Lockshackle (My Pet Dungeon level)
Score 150,000 points on Hell's Deep (My Pet Dungeon level)
Win the first arena of The Under Games as Volta
Win the second arena of The Under Games as Volta
Win the third arena of The Under Games as Volta
Win the fourth arena of The Under Games as Volta
Win the quarter-final of The Under Games as Volta
Win the semi-final of The Under Games as Volta
Win The Under Games as Volta
Win the first arena of The Under Games as Lamash
Win the second arena of The Under Games as Lamash
Win the third arena of The Under Games as Lamash
Win the fourth arena of The Under Games as Lamash
Win the quarter-final of The Under Games as Lamash
Win the semi-final of The Under Games as Lamash
Win The Under Games as Lamash
Win the first arena of The Under Games as Shale
Win the second arena of The Under Games as Shale
Win the third arena of The Under Games as Shale
Win the fourth arena of The Under Games as Shale
Win the quarter-final of The Under Games as Shale
Win the semi-final of The Under Games as Shale
Win The Under Games as Shale
Win the first arena of The Under Games as Kasita
Win the second arena of The Under Games as Kasita
Win the third arena of The Under Games as Kasita
Win the fourth arena of The Under Games as Kasita
Win the quarter-final of The Under Games as Kasita
Win the semi-final of The Under Games as Kasita
Win The Under Games as Kasita
Win the first arena of The Under Games on Master difficulty
Win the second arena of The Under Games on Master difficulty
Win the third arena of The Under Games on Master difficulty
Win the fourth arena of The Under Games on Master difficulty
Win the quarter-final of The Under Games on Master difficulty
Win the semi-final of The Under Games on Master difficulty
Win the The Under Games on Master difficulty
Beat Lamash on Hard difficulty on any official 1v1 Skirmish map
Beat Volta on Hard difficulty on any official 1v1 Skirmish map
Beat Zeam on Hard difficulty on any official 1v1 Skirmish map
Beat Shale on Hard difficulty on any official 1v1 Skirmish map