Here is the full list of all 36 Samsara achievements.
Complete Samsara
Complete the whole game again in inversed mode
Complete the game in 3 hours
Tap the beach ball 25 times without it hitting the ground
The beach ball ed 5 metres high
Knock all four coconuts off the palm trees within one level
Complete Chapter 8
Complete Chapter 7
Popped a balloon at the fairground
Start the horses racing in the fairground
Make the rat in fairground to run away
Complete Chapter 6
Complete Chapter 5
Interrupt the cow being taken by aliens
Make the raccoon run away
Turn on the Fire hydrant in the Suburbs
Destroy the lights on the power-lines in the suburbs
Bang the bins in Suburbs
Create an electric surge in the suburbs 5 times
Complete Chapter 4
Walk through 15 in-level portals during one level
Complete Chapter 3
Killed by Vines
Killed both versions of Zee simultaneously during a level
Make the bats in the Caves squeak
Complete Chapter 2
Complete Chapter 1
Complete a whole chapter with all levels inversed
Get Zee stuck within a puzzle
Complete a level inversed
Make the leaves in the Woods fall from the trees
Make the birds in the woods or park fly away
Complete the prologue
Fall from a big height
Rock the horse in the Prologue
Create a ripple in the water during the Prologue