Fun little game! Kiko Loureiro made the music?! I used to listen to Angra long ago :)
I could probably have finished it even faster if I only realized how much getting those tanks gave back after a while.
One thing about camera management: I would have liked the rocket to be a bit further down when going up and further up when going down, so that there would have been more of the screen that was relevant at all times.
Nicely done, satisfying end and all!