This is the shortest part of the Base construction and should only take you one night to do it. Craft 10 Ladders and only keep that amount in your toolbelt. Since we need to dig 10 blocks deep, using up all 10 Ladders along the way will tell when you’re done. Dig 3 blocks wide each time, this way you have 2 blocks worth of space to move around and 1 block dedicated for supporting Ladders. Once you installed the last Ladder, dig one more block down and place Wood Frame Blocks and upgrade to wood. This will be the floor of the Bunker.