I enjoyed the core loop, I think the effect of every shot was very satisfying and i like the artistic choice.
However i think you did not play the game yourself very much, after like four minutes it becomes very repetitive with not much change except the price increase of the chests, which contain little to no useful content.
The wheel itself also feels like its just there with not much purpose. The first few spins select the guns, but they dont even tell you which ones you could get. And they're not balanced in my opinion. I got three blunderbusses on my first game and then a bunch of heals when i was on full hp. And then at the end of my last game for many of my wheels (when i was on 1 hp) the heals did not even appear on the wheel.
Also the game just stops at the "winning" 20 minutes, the enemies and the timer freezes, not much happens, no victory screen, sad :(
But that being said, the parts that worked for me were in my opinion really good!!