I defeated the grand slime! The art is great and I think you've got a really solid gameplay loop here.
At first I found the game economy to be a little overwhelming given the number of resource types, but after I settled in a bit I found it OK! I'd still be curious to see how the game would play differently if you reduced the number of different kinds of resources or otherwise looked for other ways to simplify the economy aspect of the game.
Having each room either be a resource room or a hostile room was an interesting choice. I'd be curious if you considered mixing the types? I bet there could be some interesting gameplay from doing so--for example, having high value resources guarded by more difficult enemies in some rooms or maybe even having lighter enemy types spawn in or chase in low value resource rooms to keep the player on their toes.
Great game with lots of potential—thanks for making and sharing it here!