POO! im a baby!
This reminded me a lot of Sigma Star. Being able to upgrade was fun while flying instead of between stages. So long as you upgraded enough, you'd be able to maneuver around the one-hit KO thing.
The music is beautiful! Especially the 8bit SOAD cover when you get to the bosses! Unfortunately I could only manage to get to 2 of those bosses and then the game bossed me :(
I love playing these retro style shooter games and this one did not disappoint.
I think the upgrade system is genius. This game has great music, good art, a nice plot and entertaining gameplay, that's alot of goodness for a pixel shooter game. Awesome that you made this, we want more!