"Safe"[ish] House

This is just a small project because I wanted to try to make a somewhat secure base without using any redstone or command blocks. Made especially for Unspeakablegame, 09sharkboy, and ItsMooseCraft. Make sure that the first obstacle is full of zombies and creepers before attempting and that there are skeletons in the wall by the ladder after the cacti. There should also be skeletons in the obsidian rooms in the cobwebs and by the lava parkour. Do NOT give yourself anything besides armor and make sure you start by the signs.