Erm...occasionally when I 'die' the screen goes red, then the red/blue percent jumps to 100 and it keeps going with the red overlay...when the correct number of enemies is then defeated...freeze game.
Only issue I have is how to get to the upgrades whilst playing. Having to leave your directional keys to upgrade can be hazardous to your health. Still a very fun game.
Came back to this after having finished it before. All progress was lost...and I didn't mind redoing it at all. And yes, the music is nice and suits the style overall. There were some minor issues with the jump not working at times. But I felt it was worth putting up with for the rest.
Fairly solid game. Small gripes about shooting through the 'solid' walls when standing next to them and occasionaly not being able to jump through a jump-throughable platform because close to its end.
I was a little dissapointed when I realised that the music I thought was for this game was coming from another window. But what remains here is a very good mind relax.