Here is the full list of all 30 My Brother Rabbit achievements. It takes around 3-4 hours to unlock all of the achievements on Windows.
Solve the 4-window puzzle.
The giant robo-moose is ready.
Solve the tangram puzzle.
Startle all of the signal birds.
Grow the ladder from the beans.
Lower the big baobab.
Find the cure somewhere else.
Give the test results to the Doctor.
Sculpt an ice swan.
Find all the spiders.
Uncork all of the test tubes on the tree.
Free the Rabbit.
Leave this defiled place.
Use all the colors.
Fix the rainbow divider.
Pump all the objects.
Make all the rubber ducks quack.
Bring the fever down.
Leave the Rabbit Hole.
Try all of the robo-moose hands.
Move the bike to the top.
Fly to the rescue.
Find all the turtles.
Open all the clam shells.
Collect all the pearls.
Use the bubble to move heroes up.
Put the wheels on the cart.
Finish the game.
Follow them to see where they flew.
Interact with all the yamyams.