Waow that's mind blowing for a Game Jam!
I may have played the post Jam, but the quality and the mechanics are top notch. I don't know how you pull this off, but you have my dearest respect!
I believe this game could become much bigger, as the foundation is very solid. It could have a bigger gameplay loop, a new shop, events, missions (like bounties), more loot, and character and skill tree customization (like Rogue Legacy with a new generation improving new champions).
I hope you guys can find time to work on it even more! Anyway, I got a blast!