I was playing the slots and I need you to balance them. In a 10 minute time span, I got 6 jackpots and I basically money farmed off of the slots.
On a real note though, I loved your game. The bosses felt good, the movement felt good, and art was spectacular. My only issue is more on balancing, the upgrades you buy range from "oh that's useful" to "oh let me shred the boss real quick". A bit of fine tuning there would take your game way further. Awesome project though!!