Thank you very much!  Yes the game was a bit rushed with this little jump mechanic.  I wanted the guy to launch way up into space then jump on lots of guys really (like a pinball machine sort of).

Definitely!  I'm modifying the game to give horizontal control (perhaps a few dashes as well), and the ability to bust through floating islands.  Upgrades are an amazing idea, perhaps higher jump boots or something?   Also the game is using a fixed level size but will add a generated level to make it more dynamic.  The game definitely needs work though.  Thanks for the comment!

Thanks for the critique!   You can also jump on the ducks in the sky to get more distance, and you can move around with WSAD.  Sorry that wasn't in the instructions!  I updated the instructions to show these controls.