Unlock Terk:
Successfully complete the 3 Terk challenges in 
the final levels of the game.

Monkey Talk: 
Get Baby Gorilla Talk by beating the second 
bungee to get Baboon talk and beating Over the
Edge.

Play as Jane: 
Finish the Terk challenges in world 1 to unlock
Jane in the skiing and surfing challenges.

Play as Porter:
Finish the Terk challenges in world 2 to unlock
Porter in the skiing and surfing challenges.