Great Work... But...
It's too easy, for example, when you are fighting the second boss (The undersea stage), You can avoid the barrels just going up and you then just wait for it to open the mouth and shoot. I don't know if it's a debug or you made it that way, but IT'S TOO EASY
Anyway, great graphics, awesome music (downloaded Bosa and Pyroguy songs)
Vote: 4/5
Good: Graphics, Music, Voice, Style
Bad: Difficulty
Overall: 8/10