This was an extremely well made game! I really liked the music in conjunction with the sound effects, really gave me that retro-arcade feel. I found the combat mechanics simple and intuitive to use which is always great with this style of game.
One thing I will say, is sometimes I felt the enemies projectiles felt a bit forgiving. Sometimes they would fly past me and seem like they are clipping my ship but I wouldn't take any damage, other than this minor thing though it was a polished well put together game.
Great job guys! :)