Haha! Thanks for playing!
Sorry it was a little bit difficult -- the first time I made it the boss had half its current health, one could literally just tank it and just use the assault mode on the far left edge - when I fixed it though I went too far and really made it a little bit too difficult. I also realized that the machinegun attack is a little bit too difficult to dodge when the player is far away from the boss (it's actually impossible to dodge if the boss happens to fire it when you are cornered to the left edge -- really messed it up). I actually wanted to fix it by making the boss much less likely to use its machinegun attack when the player is cornered to the left edge of the room -- but ended up forgetting to do it because I always fight the boss at close quarter (with the shotgun mode) when testing it :P
For the story as mentioned I actually wanted it such that the game began with the rescue of the shield partner, but then the alarm sounded and then they both fight their way out of the Yakuza base together -- too bad I cut it XD
You really did put so much effort this time. It was really hard to believe that you made what you made in just two weeks. If the story were longer it could've become something that would sell. Very great job.