i love the ambition and amount of systems put into this game! I'm very impressed by the scope and execution. A lot of enemy types, satisfying machine gun attacks, I like the shopkeeper graphics.
As others mentioned, it was a little too difficult. Maybe in this case, less enemies but more balanced combat loop would have caught my attention longer :)
Very nice work though! The music had me feel like I was stuck in an endless dream/nightmare, constantly ascending and descending. I like the concept of enemies being created out of the dream world!