I advise quarrying dirt and smelting the sand throughout the night and constructing the tunnel by day to optimize your output. On your 3rd day, you must be self-dependent for the many part, so you should now have the ability to check out and find your world. Just don't expect the combat to be as refined as state Senior Scrolls: Skyrim. Embellish this with products such as a picnic table and barbeque.