Here is the full list of all 23 Minimal achievements.
Become best drummer in the world
Make 99 flips in one stage
Flip same tile 5 times in row
Scroll the credits all the way down
Complete all levels on par
Finish 250 levels
Finish 225 levels
Finish 200 levels
Finish 175 levels
Flip 1000 tiles
Finish 150 levels
Finish 125 levels
Finish 100 levels
Finish "Pyramide" stage
Finish 75 levels
Finish "Mordor" stage
Finish "Helmet" stage
Finish "UFO" stage
Finish 50 levels
Finish "Anchor" stage
Finish 25 levels
Finish 10 levels
Finish 1st level