My first rating of any flash game or animation, but this was brilliantly done! I played the first one and found it a little frustrating when you reach the point of never having enough energy to move on, and gnashing your teeth while the enemies trundle on by. In this version that balance seems to have been found - and for the first time i was getting some pretty decent weps!
Feedback requires constructive criticism so i'd suggest it's pretty graphic intensive - but maybe that's aimed at the viewers with lousy PCs. I suppose one other thing, i drag the mouse out of the window i'm playing it in so occassionally i accidentally lose the window - could a border be set up around to keep the mouse within the window? (or is this amateurish noob suggestion?)
Excellent game - 5 out of 5.