Here is the full list of all 21 ICEwall achievements.
The base game contains 18 achievements, and there is 1 DLC pack containing 3 achievements.
Beat the game with Normal difficulty and Draft mode selected
Beat the game with Hard difficulty and Draft mode selected
Beat the game with Normal difficulty and No Draft mode selected
Beat the game with Hard difficulty and No Draft mode selected
Beat the game with Normal difficulty and Free Draft mode selected
Beat the game with Hard difficulty and Free Draft mode selected
Complete a run with total accuracy 80% or better
Complete a run in under 7 minutes
Beat the game with Berserker as your first upgrade
Beat the game with the Glass Cannon
Beat the game with the Mothership and your starting drone not taking any damage
Defeat Death in under 10 seconds
Get over 1000 Attack Damage
Get Fire Rate under 0.1 s
Get 15 or more Singularity power-ups
Get 15 or more Health
Get maximum Projectile Size
Get maximum number of projectiles spawned from a single shot fired
Complete 10 levels of Endless mode
Complete 20 levels of Endless mode
Complete 30 levels of Endless mode