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.
Beat all Challenges.
Unlock all endless levels.
Get RED ending in every level of SPEEDRUNrt challenge.
Launch every app in the system.
Get RED ending in every level of SPEEDRUN challenge.
Kill 2 Red Dudes with one katana throw.
Kill 3 Red Dudes with one shotgun shot.
Kill 3 Red Dudes with one rifle burst.
Upload a replay on killstagram.com
Kill 100 Red Dudes with a katana.
Complete the game.
Kill 100 Red Dudes with a rifle.
Score 100 headshots.
Kill 100 Red Dudes with a shotgun.
Kill 100 Red Dudes using melee.
Get back to the system after being expelled.
Kill 100 Red Dudes with a pistol.
Cut bullet with a katana.
Complete SERV level.
Shoot down a bullet with a bullet.
Kill an enemy by jumping on him.
Complete SUBWAY level.