Here is the full list of all 26 SUPERHOT achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Become part of the community.
Find all secrets.
Kill over 1987 Red Dudes in endless mode.
Unlock all endless levels.
Beat all Challenges.
Launch every app in the system.
Get RED ending in every level of SPEEDRUN challenge.
Kill 3 Red Dudes with one shotgun shot.
Kill 100 Red Dudes with a rifle.
Kill 2 Red Dudes with one katana throw.
Kill 100 Red Dudes with a shotgun.
Get RED ending in every level of SPEEDRUNrt challenge.
Score 100 headshots.
Upload a replay on killstagram.com
Kill an enemy by jumping on him.
Kill 3 Red Dudes with one rifle burst.
Kill 100 Red Dudes with a katana.
Kill 100 Red Dudes using melee.
Complete the game.
Kill 100 Red Dudes with a pistol.
Get back to the system after being expelled.
Complete SERV level.
Cut bullet with a katana.
Complete SUBWAY level.
Shoot down a bullet with a bullet.