Too easy
I supposed I quite enjoyed this. The sounds clips for the character are really low quality and sound stupid, and you get WAY too many points per level. I could upgrade my everything to the point where nothing ever stood a chance. If you upped the difficulty a bit, or had a difficulty option, the game would be significatly improved.
Also, the story is redundant. You really don't need it. It's like trying to give a backstory to Tetris.