Here is the full list of all 16 RadianVR achievements.
Play an Arcade mode game for 5 minutes
Play an Arcade mode game for 10 minutes
Clear all blocks of any material
Reach level 10 in any more
Reach level 20 in any mode
Complete all puzzles in the first c
Complete all puzzles in the second c
Complete all puzzles in the third c
Complete all puzzles in the fourth c
Complete all puzzles in the fifth c
Complete all puzzles in the sixth c
Complete all puzzles in the seventh c
Complete all puzzles in the eighth c
Complete all puzzles in the ninth c
Accumulate 5 rainbows in any mode
Level up with less than 5 seconds remaining on the timer in Arcade mode