In all honesty this was frustrating for me. But I tend to get frustrated when I'm unable to finish a game. My problem was that the character kept moving whenever I let go of the move keys, usually for a distance large enough that I couldn't land a jump on the shortest platforms. Other than that I didn't like that I had to hold the spacebar to jump higher, my natural thought was always to press it then let it go.
Otherwise a pretty decent game, at least from as far as I saw. Another entirely unique take on the theme, great work.