Disregard the warning at the beach
Restart any level less than 10 seconds in
Achieve all feats
Finish any level without defeating a single enemy
Taste all kinds of food
Destroy all pterodactyl nests
Fall on the fish face down
Destroy 30 nutshells
Avoid crashing into the ground on level 1-2
Beat the No Damage Challenge on all levels
Finish level 1-5 without using the slingshot
Fall from more than 100 meters
Eat 3 times during the boss fight on level 4-4
Beat the Collectible Challenge on all levels
Kill an enemy and open a flower with a single shot
Kill 3 enemies with a single jetpack charge
Cut off the second head from all allosauruses on level 4-4 but kill none of them
Gather 9999 shells
Jetpack charge 10 times without touching the ground
Find the secret workforce behind wooden platforms
Beat Flint the caveman without letting him jump on the wall
Detonate yourself
Beat the Time Challenge on all levels
Complete the game in the Arcade Mode
Complete a Time Challenge despite eating on the level
Spin the same spinning sign 4 times
Trigger an idle animation
Return to Era's shop after you bought everything
Finish the following levels without collecting a single shell: 1-4, 3-2, 3-8, 4-1, and 4-6
Finish all chase sequences without getting a single hit