Aw.... You should be able to extract it using Winrar. It's free!
Okay I rated it. Fun concept even though Im not too fervent on it's fit to the theme but it's okay. It would've been a lot better if my game didn't lag every time I got to the second powerup... I tried to still keep playing once the powerups showed up and I couldnt select them but it was too hard for me unfortunately... I didnt get to see your boss. Still, fun game idea, just needs some polish here and there like the size of the player hitbox or his start move speed...