you have an interesting game mechanic here. however, the game seems unfisished so we can't see it's full potential. if you're looking for suggestions:
-it's hard t find the requested items when you get far. maybe add a generator
-skulls/gold/iron/... are only different by their names, maybe add a unique mechanique for each (i.E force field for the skull , buying mates with gold, ....)
-the throwing into fire particles are nice, but it would be even better with some sfx.
-this looks like something you could do in pico-8. idk if this is any help, but typically with this kind of game (pixel art, main map, ...) pico-8 would make the developpement easier, you should check it out. bonus points for the input selection at the beginning, being an azerty