Here is the full list of all 18 Rabbit Hole 3D achievements.
Complete the LINE stage
Complete the FLOW stage
Complete the FLOWER stage
Complete the FLOWEST stage
Complete the ROLL stage
Complete the ROLLER stage
Complete the ROLLEST stage
Complete the MEMORY stage
500 Attempts without exiting the game
Get 3 more lives
Complete the FLOW stage in practice mode
Complete the FLOWER stage in practice mode
Complete the FLOWEST stage in practice mode
Complete the ROLL stage in practice mode
Complete the ROLLER stage in practice mode
Complete the ROLLEST stage in practice mode
Complete the MEMORY stage in practice mode
Complete the LINE stage in practice mode