Reach the forest island
Reach the cave island
Reach the canyon island
Reach the jungle island
Play all levels
Clear all levels
Collect 100 drops
Collect 200 drops
Get five drops on all levels
Clear all bosses
Get five drops on all boss levels
Clear 100 fire flies
Find a hidden powerup
Push soda can to the end of level 2 on tropical island.
Bend the truck over backwards.