A lot of polish that tends to go missing from game jam games, an intro with credits, a tutorial and a nice itch game page. It starts out good :)
So sad that the stats did not save, what did the swag stat do!? I managed to reach the gold city but I died a couple of times. Thanks for the ability to respawn! I am impressed by how much content you did, different enemies with different attacks and animations, four regions with different art and characteristic and then some form of battle at the end! Also sound effects and music! It fits the theme aswell with mining of ore and reaching the golden city. And the prerequisite is from the stat screen I assume.
Some possible improvements:
Particles for when the enemies dies
Seeing the ore after breaking it as a pickup/same when you drop it
Deposit all ore in one go or atleast making it possible to click fast(it feels like I need to move out of a collider and then in again to be able to deposit ore)
The yellow mimic ore could run into the wall or maybe I hit it into the wall.
Sometimes I saw some black lines in the background, z fighting maybe?
Good job! Would be fun to try it out with the different stats!