Here is the full list of all 23 Wargroove achievements.
Complete an arcade run.
Complete all missions in Act 1.
Use a Groove.
Complete the prologue.
Complete a puzzle.
Create a custom map.
Win a skirmish game.
Win an online match in Quick Play.
Play a downloaded map.
Complete all missions in Act 2.
Complete all missions in Act 3.
Complete all missions in Act 4.
Complete all missions in Act 5.
Complete all missions in Act 6.
Use every Groove once.
Complete an Arcade in hard difficulty.
Complete "An Ancient Adversary".
Complete "The Enemy Within".
Collect 200 stars.
Obtain an S-Rank on every campaign mission.
Complete all arcade runs.
Complete all puzzles.
Unlock every item in the gallery.