RPG with only one Inventory Slot

An RPG game where you only have one single inventory slot, that also doubles as a the equipment slot. There are 5 levels, and you can choose between 4 different items that you can use to reach the ladders. You can also try it out without using any items. The items can be grouped in 2 ways: Single-Use vs Infinite-Use, Aggressive vs Defensive. You can have a Infinite-Use Aggressive item, that is the Club. It doesnt deal much damage, but you can use it as much as you like. The Single-Use Aggressive item is the Spear. You can only throw it once, but it kills everything in its path. The Infinite-Us...