I got to level 22! Really well designed! This feels like a mobile or browser game already, which is insane for coming out of a 48 hour game jam.
I really liked how you collected items over time and the slot roller would fill up over time. The upgrades were also a great design choice since it helps you keep up with the enemy progression while working well with the RNG (which I've noticed is hard to design progression around).
Nice job!