Visit every zone.
Reach Level 101
Do a lot of hurt. With your butt.
Unlock the mermaid mutator.
Give Steve Works all the apples.
Unlock the wheel of time mutator.
OMG IS THAT WHAT I THINK IT IS?
Jörgen.
Unlock the ExcaliGoat mutator.
Unlock the Gravity Goat mutator.
Get deviously trapped again.
Jump on the launch pad.
Enjoy your trip.
It never erupts when you want it to.
Baa with the choir.
Inflate that guy's knee.
Thrash the server room.
Throw the dwarf Bilbo into the Lava.
Do a card trick at the magician.
Find all the trophies.