Needs more balancing and improvements
Played five levels and got destroyed, but should be enough to let me hook the essence of the game.
On earlier parts, there seems to be... "wrong" weapons power level. I shoot the boss with the fireball-thingy, then switched to the first machine gun weapon and the boss die quicker that way. That fireball should, obviously, more powerful compared to the little cheap machine gun, yet it works not the way it should.
The art is not too catchy for me, but the main gameplay itself provided some enjoyment for ten minutes... well, particularly the first stage it is.
The rest is, perhaps, too tiring to type for me ;( maybe other members will hog it down for you )
6/10 and 3/5
You still have much to learn about balancing and learning to sit in the audience's seat. Other than that, I see a fair potential in you. Keep trying!