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