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