Here is the full list of all 13 Mutant Mudds Super Challenge achievements.
Beat final boss without getting hit
Try to escape the Final Boss by boosting to the roof
Beat a level with no gems.
Collect all songs
Beat the game
Collect all the characters
Get killed by a bomb as Bomb Monkey
Avoid killing any bad guys in a level where that's actually a challenge
Beat a level with checkpoints disabled
Collect one special character using another
Get killed by spikes or lava
Go skydiving and survive
Beat the game with less than 100 deaths