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