Like everyone, I'll say the game was a bit easy. In the beginning it was understandable, but it stayed that way for the whole game. In fact, it feels like you forgot to take into account the player's eventual upgrades. Be careful about that, next time. ;)
Otherwise, not much to say. Enjoyable, but not a revolution, Kept me entertained for the time I played it, yep, everything you wait from a flash game. I'll rate it a 4/5.
(I also liked the reference with the bad guy. Almost too obvious.)
 "Dragon Princess"){kind=icon}
Thank you for the feedback! I'll work on the difficulty curve better next time!