Here is the full list of all 13 MEATGRINDER achievements.
Score 1000 points in RED INFINITE mode
Make 3 kills in row with the guitar
Score 1000 points in BLUE INFINITE mode
Obtain double shotgun
Finish the game
Hook a punk while falling from a crashed plane
Get hooked on a flying truck
Die on a forest level by falling off the train
Kick 100 Punks
Get damaged by hummer thorns
Kick a punk twice in a row
Kill a punk while he is hooked
Hook a punk after kicking him