22m 51.4s (not sure if it's a right time, I idled some time in the middle of the playthrough). This game was actually fun, I love double jumps and triple jumps so much. The ending is cool. And I should really go on a diet. 10 sugar cubes out of 10.
I guess it would be even better if it resets the level to beginning automatically or if there's a hotkey for that. Because, you see, current key mapping requires both hands to be on the keyboard, but then retry button demands to use a mouse, so you have to constantly switch right hand.