Great game!
I really like this game!
Critic as I am though, there are a few things that could be made better that I wan't to point out. They're all easy to fix.
First off, the controls are far too sluggish. I understand the point, but it really is a lot heavier than it needs to be. The tank moves back and forth so slowly that you end up undershooting or overshooting a lot of jumps. Same for gravity, it feels like you're on the moon. Speed up, please.
Secondly, why do you have to blow up in the air when the fuel goes out? I've blown three times now because I bounced on enemies and never got to the ground in time. One should crash only after the final combo has been added to the exp and it wasn't enough.
Thirdly, probably the worst: Too often it happens that there are no enemies on the field! Like what the hell, what am I supposed to do for exp before the fuel goes out and I explode? Why should my combo end just because there are no enemies left to bounce on and no new ones spawn for ten seconds?
Finally, a larger play field (especially horizontally) would be great.
I'm looking forward to the sequal!