Full list of all 37 Windowkill achievements.
The base game contains 22 achievements, and there are 2 DLC packs containing 15 achievements.
survive for 4 minutes without collecting a coin
get lv. 4 detach
kill wyrm without causing a split
kill 2 bosses at once during halt
block 200 bullets
die to slime trail
kill miasma as nyx
recover a mebo 100 times
unlock every character
kill miasma as mebo without getting hit by its splatter attack
keep a smiley alive for 10 minutes
kill an infected orb array
collect 200 coins in a run as mebo without using any movement input
kill ??? as every character
survive for 8 minutes in challenge mode