Cool concepts. One of the first things i would add would be tool-tips, what different stats/items do.
What i found out, who wants to try this.
Buying:
sword - how many times you will auto-swing for 1 dmg
bow: slower, does the same dmg as how many bows you have
Food - gives HP and stuffes you
Skills
HP - more hp
Gut - increases capacity, but i don't know how to use the food. I am always at maximum and the stages don't change
Attack: increases DMG of your ability by (level/2)
Speed: ability recharge time?