Here is the full list of all 30 Mooch achievements.
Collect first part of Tulas soul
Pass the first enemy
Make an enemy to fall down
Beat Spider bot
Beat The Worm
Beat Hammerstrike
Beat Egdecrusher
Beat 503
Beat The Mine
Beat Mayestro
Beat Giganto
Beat The Eye
Finish pac-level
Smash enemy
Find teleport sequence
Find secret cave
Get into a follower
Shoot enemy with a tank
Fall into a hole
Escape from a boulder
Finish Bullethell level
Make a Drill drill way for you
Make enemy to open door
Trigger an alarm
Activate Big G
Make a leap of faith
Finish game on easy mode
Finish game on normal mode
Finish game on hard mode
Use a teleporter