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