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