Damn this look good. And this gun is SOO JUUUICY. A lot of efforts when into the making of this game and we can feel it. This pixel art is beautiful and i really enjoy how you implemented the tutorial.
The roll is a bit buggy in some circumstances but the only thing that really bothered me was the map design. There was some VERY GOOD elements but dilluting a game like this with copy pasted sections and lots of backtracking just felt like putting water in a good wine. At this point i am obviously just nitpicking you did an amazing job for 10 days and the game was very enjoyable.
Congrats !