This is a very fun game, but as several people have already stated, the controls take away from my enjoyment. I would prefer if up was jump, and space was shoot/grenade. Or, if A and S were gun and grenade, to prevent accidentally throwing grenades at myself. Also, I would prefer if I could hold the "shoot" button to fire at maximum speed, instead of mashing it over and over as fast as I can (my wrist is actually sore from the boss). Controls aside, I really enjoyed this, the music is a good fit and the challenge level built at a good pace. I only had one glitch, the first time I played the boss level, the second set of small ghosts froze my movement, so I couldn't dodge at all. And even though I somehow survived those, when the big ghost returned, I was still frozen in place so he just bombed me every time he flew over. The glitch never happened again, though. Overall, a great game, 5/5 is you adjust the controls. Keep up the good work, and I look forward to seeing the rest of the adventure :)