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.
Become part of the community.
Launch every app in the system.
Cut bullet with a katana.
Get RED ending in every level of SPEEDRUN challenge.
Beat all Challenges.
Kill over 1987 Red Dudes in endless mode.
Unlock all endless levels.
Kill 100 Red Dudes with a rifle.
Kill 100 Red Dudes with a shotgun.
Kill 100 Red Dudes with a katana.
Complete the game.
Kill 100 Red Dudes using melee.
Score 100 headshots.
Get back to the system after being expelled.
Kill 3 Red Dudes with one shotgun shot.
Kill an enemy by jumping on him.
Kill 100 Red Dudes with a pistol.
Kill 2 Red Dudes with one katana throw.
Complete SERV level.
Kill 3 Red Dudes with one rifle burst.
Upload a replay on killstagram.com
Shoot down a bullet with a bullet.
Complete SUBWAY level.