Thanks for your feedback.
The "double jumping" is one of the things that the most time was spent on. In-fact, it was decided that the velocity-based mechanic was more fun than a typical double-jump, and opened up more variety in designing the levels and playing them.
The only glitch that we have noticed is with the textboxes/portraits, and these are things we intend to fix later in a future update. The jam schedule was tight to handle all the things on our list of items to fix.
Disastrous is probably a bit strong of a term though.