Here is the full list of all 36 Happy Wars achievements.
Successfully use Wind Swap skill in Quick Match or Co-op mode 50 times total.
Successfully use Ultimate Weapon team skill in Quick Match or Co-op mode 50 times total.
Successfully use Cyclone Rush team skill in Quick Match or Co-op mode 50 times total.
Successfully use Multiple Missile team skill in Quick Match or Co-op mode 50 times total.
Successfully use Gatling or Rocket Launcher in Quick Match or Co-op mode 100 times total.
Choose Berserker, Engineer, and Zephyr at least once in Quick Match or Co-op mode.
Complete every Story Mission
Kill a foe with the Repair skill in Quick Match or Co-op mode.
Complete the 'Archangel' Quest
Kill foes with the Berserk skill in Quick Match or Co-op mode at least 100 times.
Reach rank 50
Raise the level of an item to Level 15
Use all skills in a Quick Match or Co-op mode
Reach rank 40
Complete at least 60 Quests
Complete the 'The Devil' Quest
Complete the 'The Godlike Swordsman' Quest
Get a Level 10 item
Complete more than 40 quests
Reach rank 20
Play 100 non-tutorial games
Use Warrior, Cleric, and Mage 2 times each in a Quick Match or Co-op Mode
Use a talk or order commands 4 times in a Quick Match or Co-op Mode
Unlock the
Complete at least 20 Quests
Get 1 win in Co-op mode
Launch a Team Skill and get a kill in a Quick Match or Co-op Mode
Receive mention in Hero Pop-up in a Quick Match or Co-op Mode
Modify an item and add a buff to it
Get 1 win in Skirmish Mode
Complete all of the tutorials
Get 1 victory in any game session
Get 15 items
Get a premium item
Play the Happy Spinner
Level-up an item