I enjoyed it
Took me about a half hour my first time to get to the cat. I got what I wanted from this game. A rather simple, straight forward jump and shoot side scroll game.
I would like to see the game progress further, like more levels vs. 1 long one.
More variety. Variety of backgrounds/colors. More variety of enemies. The only enemy that stud out to me was the big one with all the eyes (which was cool). Maybe throw more like that in there to mix it up some more.
I like the overall concept. I had fun and it was easy to follow and pickup.
It would be nicer to be rewarded with a little better ending. Maybe a more detailed picture or some animation.