Here is the full list of all 23 KUR achievements.
The base game contains 10 achievements, and there is 1 DLC pack containing 13 achievements.
Kill 100 enemies.
Kill 1000 enemies.
Beat `Welcome to KUR` without killing any enemies.
Kill 25 shrunken enemies with the boot.
Find all the secrets.
Get all the guns!
Kick 100 interactables.
Kick an interactable!
Acquire over 750,000 in corp cash.
Stomp 50 skull snails.
Acquire over 250,000 in corp cash.
Kill 25 frozen enemies with the boot.
Kill all enemies in a single level.