Help with GML Roguelike code.

I made a Rpg with some Roguelikes things like, the movement, the dash, the sprites and animatioms, health packs and xp (by enemy drops) etc etc.. but now I need someone to program the HUD/GUI as a pixel art I can make where it shows the health the xp and the bullets (not coded) and to code that when you kill all the room enemies you can go to another room randomly generated but with an specific tileset. Its Game Maker Studio code.