Here is the full list of all 88 Warmonium achievements.
Play your first match
Unlock a promotional item
Play for 10 minutes
Play on 3 different maps
Win a custom game
Deal 10 damage
Deal 100 damage
Receive 100 damage
Kill 10 figures
Kill 100 figures
Heal 10 damage
Play for 100 minutes
Play for 1000 minutes
Win 10 custom games
Win 100 custom games
Win 1000 custom games
Deal 1000 damage
Receive 1000 damage
Kill 1000 figures
Kill 10000 figures
Heal 100 damage
Heal 1000 damage
Play for 10000 minutes
Win 10000 custom games
Deal 10000 damage
Receive 10000 damage
Heal 10000 damage
Roll a 15 while attacking with a Necronal Blade
Activate the Ancient passive ability with a champion
Kill 100 Champions with Thearc
Activate Incredible Reflex with a Dranic Thornmonger
Kill 100 Champions with Aboth
Kill 100 Champions with Daxious
Kill 100 Champions with Dayne
Kill 100 Champions with Dranic
Kill 100 Champions with EOB
Kill 100 Champions with Etryl
Kill 100 Champions with Forestalk
Kill 100 Champions with Foretian
Kill 100 Champions with Hefildr
Kill 100 Champions with Hellbringers
Kill 100 Champions with Hukato
Kill 100 Champions with Jinzan
Kill 100 Champions with Lavarock Minions
Kill 100 Champions with Sheoak
Kill 100 Champions with Blades
Kill 100 Champions with Soulwreath
Kill 100 Champions with TMT
Kill 100 Champions with Vetalia
Kill 100 Champions with Warvisor
Kill 100 Champions with Woodland
Kill 100 Champions with Bismuth
Kill 1000 Champions with Thearc
Kill 1000 Champions with Aboth
Kill 1000 Champions with Daxious
Kill 1000 Champions with Dayne
Kill 1000 Champions with Dranic
Kill 1000 Champions with EOB
Kill 1000 Champions with Etryl
Kill 1000 Champions with Forestalk
Kill 1000 Champions with Foretian
Kill 1000 Champions with Hefildr
Kill 1000 Champions with Hellbringers
Kill 1000 Champions with Hukato
Kill 1000 Champions with Jinzan
Kill 1000 Champions with Lavarock Minions
Kill 1000 Champions with Sheoak
Kill 1000 Champions with Blades
Kill 1000 Champions with Soulwreath
Kill 1000 Champions with TMT
Kill 1000 Champions with Vetalia
Kill 1000 Champions with Warvisor
Kill 1000 Champions with Woodland
Kill 1000 Champions with Bismuth
Kill 100 Champions with Aragathus
Kill 100 Champions with Stropoda Acidix
Kill 100 Champions with Stropoda Youngling
Kill 100 Champions with Gidshab
Kill 100 Champions with Syealir
Kill 100 Champions with Vetkal
Kill 100 Champions with Carnal Archers
Kill 1000 Champions with Aragathus
Kill 1000 Champions with Stropoda Acidix
Kill 1000 Champions with Stropoda Youngling
Kill 1000 Champions with Gidshab
Kill 1000 Champions with Syealir
Kill 1000 Champions with Vetkal
Kill 1000 Champions with Carnal Archers