Successfully complete the indicated task to unlock the corresponding achievement.

Achievement	How to unlock
Bauble Collector	End the nightmare with 25 Baubles.
Beyond The Infinite	Survive the void.
Bushwalk	Reach the underground forest.
Do No Harm	Be nice.
Friend O' Arthropods	Befriend three Ghost Butterflies at once.
Going up?	End the nightmare.
Hell Is Other Rabbits	Earn back 3 chances.
Hit The Bricks	Reach the Elephant Bridge without dying.
Intestinal Menagerie	Have 3 different critters at the same time.
Juiced Up	Have attack, jump and health upgraded at the same time.
Let Me Grab My Beater	Find a whacking stick.
Nosey Nelly	Discover a secret alcove.
One Chance	End the nightmare without dying.
Only Just Begun...	Make it past the first tier.