+1 for the music. It seems like you definitely have some practice because that was really good with haunting tuba and nice singing (or probably a slightly smaller instrument, I am not entirely sure). I tried recording something for a jam on my violin at some point but that didn't go nearly as well.
Gameplay wise I would've liked a little bit more, everything functioned alright, but I missed a bit of a goal, especially after I had purchased both of the weapons once.
Overall though it's a polished game and nice take on the theme, well done!