It lacks explanation, I didn't know I could equip items till I read the comments and saw someone talking about equipping an item. I tried pressing "i" and many other buttons since I was getting some items, but nothing happened. Write about it in the instructions at least so the player can know about that possibility, and even better if you can add tha shortcut.
It has great potential, by the way. I hope you can continue to develop it, it's pretty fun to play it o(￣▽￣)ｄ