The game's not too bad. The mechanics are different than the average game in the sense that you can only use projectiles given to you by the enemies, which is an interesting twist. There are some parts that I had to constantly replay because the keyboard setup was a bit difficult to grasp, and I ended up giving up because I didn't want to spend so much time repeating things. The thing that caused the most annoyance was the "A" button for jumping. Perhaps you could change that to holding down the up arrow key instead? The layout was a bit confusing all together (minus the arrow keys, of course).
The game is kinda cute (whether or not you intended it to be that way) and rather humorous. I see something fun and different here, but it tends to cause more frustration than it's worth playing. Still, even with that being said, I still like it.