The music and sound effects were sick. I am also a metal head. I found the best strategy was to just run all the way to the end because on my first play through I wasted all my bullets trying to kill the first guy. My tips would be to give us some feedback that our bullets are doing something like enemies flashing on damage, or knockback as well as decreasing enemy hp to like 1 or 2 hits. I loved pacing and everything else was solid. I'd be excited to see what you come up with next time!