Nice..
Interesting continue option with the puzzle. I liked how the catapult recoils too.
Control of the catapult I found unintuitive. It takes too much time - to draw, aim and release - in a game like this where you have to manoeuver in the air and sometimes react quickly. On the other hand I can see how you'd want the game (in itself not a hugely original concept) to have a little something extra.