Minecraft wiki entry for Ultra_hardcore_survival, associated text: When night falls, it is safer to go mining unless you have already built a house with a bed. Try to get at least a stack of iron and a stack of coal. Get some gold for a golden apple and a clock. Get some redstone and lapis lazuli. If you get diamonds, make a diamond pickaxe and mine 14 obsidian. Craft a shield, a bucket, an iron sword and pickaxe, iron armor, an anvil, and an enchanting table if you have the resources. If you have more iron, make a second bucket and a pair of shears.