I really like the concept of assembling a random weapon, I think that's a good core gameplay element. I think just adding lots of types of weapons and other attributes like elements could lead to a pretty unique and engaging system to play with. My main gripes were that enemies could spawn anywhere, including unfairly close to you. I also found the camera movement kind of disorienting. I would also totally like to reroll my weapon more than once per run, but I think that would make more sense if the game had stages or something like that.