Here is the full list of all 31 Velocity Ultra achievements.
Collect every in-game award in Velocity Ultra
Because this player earned it
Rescue every survivor
Earn a PERFECT medal on Zone 50
Earn a PERFECT medal on all Critical Urgency zones
Earn a PERFECT medal for every zone
Achieve above average XP on every zone
Complete Zone 50
Discover all the secret areas
Reach Zone 50
Earn a PERFECT medal on Zone 48
Earn a PERFECT medal on Zone 46
Destroy 5000 Zetachron ships
Get 140,000 points in the credits minigame
Discover at least one secret area
Complete the Smith's Challenge minigame
Complete the reaction test minigame
Hit boost 100 times in a zone
Complete zone 21 without rescuing any survivors
Beat the minesweeper minigame
Earn a PERFECT medal on Zone 10
Complete Zone 18 without upgrading weapons
Use pulse bombs to gain 50 multikills
Smash 500 pieces of glass
Disable four switches in quick succession
Disable three switches in quick succession
Disable two switches in quick succession
Destroy 1000 Zetachron ships.
Destroy 500 Zetachron ships
Get trapped and killed by the scroll
Complete a zone without letting go of boost