Very well made game!
Pros
- One of my favourite genres
- Audio fits very well
- A lot of various upgrades
- Various types of monsters
- Bosses
- Saving more chances for greater reward (push the odds)
- Tooltip for saying, what "push the odds" does
- Camera movement
Cons
- One minor bug: you can get out of map
My suggestions/improvements
- Like typical rogue games it needs more content (still for this game jam you did a lot)
- Make enemies more difficult over time, because I was just oneshotting them with bombs
- Create upgrade that increases spinning slots
- I am person that doesn't look how much exp I need for next level, so almost always I didn't save rolling chances (push the odds) for level (passive) upgrades. You can change like this: every 5 or 10 levels you get guaranteed legendary upgrade, otherwise you have chances for common, rare or epic upgrade (with their corresponding chances)
In overall I really liked your game. I hope you will continue to manage it further and release a full game. If you didn't understand something from what I have said, feel free to ask me.