Also:
* The music isn't bad but as I sit here typing and the game is still running, it is extremely repetitive. Add more tracks or lengthen and spruce up the existing track.
* You need to be able to equip items and drink potions out of combat. I've died way too many times trying to equip a weapon.
* Resting should be made available out of combat at all times. Maybe have the possibility of a random encounter (low to no chance early levels, increasing chance as you level)
* Weapon and spell stats please.
* Armor for some damage mitigation, especially considering you can start runs with negative stats and no way to improve them.
* Possible stat improving items. Amulets, rings, cloaks... anything. Could be extremely rare and could be made to be kept after a run so you can actually improve your chances as you play.
* Would be nice to see the encounter cards be something a bit more substantial than Trap or Item roulette against your RNG. Perhaps have some choices, have traps be possible obstacles to retrieving items. (especially say for the aforementioned stat improving items)
I know this was made for a jam and I'm being overly critical but I really like what you've got here and would love to see it in a more fleshed out form. Good work and good luck to you. I hope to see more from you in the future.