Reach the door without the key

Finish Stage 02 without killing more than one snail

Finish Stage 03 without killing more than one snail

Finish Stage 04 without killing more than one snail

Finish Stage 05 without killing more than one snail

Finish a stage without killing any snail

Kill 10 snails

Kill 15 snails

Kill 20 snails

Kill 25 snails

Finish Stage 04 without dashing