Create a heads up display in StarterGui. Add a healthbar to the top right, and a text label with the player's name underneath it. In the bottom right, add 4 buttons in a diamond shape, with "Potions" on top, "Weapons" on the left, "Inventory" on...

Add a part on the ground, when a player touches it, it decreases health by 10%. Put a UI health bar in the upper center of the screen that turns red when the players health is less than 20%.

Create a drop down menu with 5 items.