difficult?
i actually think you should make the game a little more difficult! or add difficulties. whoever thought that was tough needs to rework their mouse, because i successfully beat the game on the first try without even losing any health.
anyways, it was an overall very good game, i was actually pretty impressed. while reading the description i was thinking "bubbles.. what the fuck??" but you surprised me. this is one of the most original games ive played - or at least it seems to be. whether or not you got the idea from something else is beyond me, but it was refreshing and i very much enjoyed it.
i think, however, the shockwave bubble was a bit retarded - i found now use for it. some of the early bubbles were better used than the others - i was able to implement the metal one very easily and didnt really need ANY of the other bubbles, except maybe the shrinking bubble once or twice to conserve air.
but i think thats a good sign - the only things i can think about your game that need tweaking are the balance and the ... well just the balance :) keep it up!