Wow, excellent game! I played to the finish and had fun playing. The gameplay is very smooth and professional, and the firing and targeting mechanism is clever and fun to use. The sound effects and various rumble/shake effects -- not just with the screen shake, but also the way it jostles the character in the boss battle -- were all really well done. I only successfully used the shop once (I couldn't read the Japanese, so I was a little unsure how to use it), but I did buy/use the missile. Great work!