Here is the full list of all 46 Mr. Dubstep achievements.
Finish the game
Complete level 24
Complete level 23
Complete level 22
Complete level 21
Complete level 20
Complete level 19
Complete level 18
Jump 1000 times
Complete level 17
Complete level 16
Complete level 15
Complete level 14
Complete level 13
Complete level 12
Complete level 11
Change Gravity 200 times
Complete level 10
Jump 500 times
Complete level 9
Complete level 8
Die 50 times
Complete level 7
Complete level 6
Die 40 times
Die 30 times
Jump 200 times
Complete level 5
Change Gravity 100 times
Die 20 times
Change Gravity 50 times
Dash 100 times
Dash 75 times
Dash 10 times
Dash 25 times
Dash 50 times
Complete level 4
Die 10 times
Jump 50 times
Die 5 times
Complete level 3
Complete level 2
Jump 10 times
Complete level 1
Change Gravity 5 times
Die