In the lava level soon after the finish line, there is a hole all the way to your right right after you jump over all of those lava pits. Run onto the last booster before the hole in the wall and jump into it. This hole cuts across part of the level.

To change your uniform color press L1 or R1 when choosing a character.

Jump through next to last waterfall in the Jungle and you will be at the finish line.

The shortcut is directly after the split tunnel starts on your left. Run to your right, then jump at the wall on your left after you pass the ramp.

Beat "Challenge" mode on the easy difficulty level to unlock the first hidden stage, Jungle. You can only play this course on the mdeium difficulty level.

At the options screen enter L2, R2, R1, Up, Square, R2

At the options screen enter Up, Down, L1, Circle, Circle, R1, R2, L1

At the options screen enter Up, Down, Circle, Down, L2, Down, R1, L2

At the options screen enter Down, Down, L1, Up, Square, R2

At the options screen enter Up, Up, Square, L2, R2, L2, R2, Down

Beat the challenge mode on hard with the Elephant.

At the options screen enter Circle, Up, Square, Circle, Square, R1, L1