Played the game and immediately whishlisted it: I love it so much! It's prefectly polished and super addictive. Two things I noticed: if you click really fast with the shotgun (I made sure I had no ammo upgrades and the default 2 ammo slots) it shot at least one more time after reaching 0 ammo.
The art style is gorgeus but i feel that there's not enough contrast. I'd suggest to add a setting for implementing High Contrast or a slider.
When it comes out, I'll definetly buy it, great job!
PS: Will there be a multiplayer mode? Will it be local or online?