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