Here is the full list of all 26 SUPERHOT VR achievements.
Cut few bullets using a knife
100 shotgun kills
Punch a single guy at least 5 times in a row
all levels complete
100 uzi kills
killed 3 guys with double uzi shot
Kill 100 Red Dudes with a pistol
Used Mind Wave for the first time
Dodge 4 bullets at the same time
thrown 100 things
Kill 3+ enemies with one burst while dual wielding uzis
Kill an enemy while not looking at him
You are prepared now
completed challenge Better
100 melee weapon klills
completed challenge Faster
spent 6 hours within the game
Finished all challenges
completed Harder challenge
Completed game laying on the floor
Complete 10 min challenge
Complete NoDeath challenge
Complete Speedrun GameTime challenge
Found every secret in the game!
Complete the game in one sitting
Complete NoGuns challenge