- You'll find the Desert Castle key inside The Hole.
The Desert Castle has three doors:
- In the central door you find the Teapot with 1,000,000 HP. It doesn't attack you but is very armored and it can take hours to kill it. The scythe and a cloning potion are useful for killing the Teapot faster. Another fast way to kill the Teapot is to have max GIFT of magic, Use Boots of Introspection Sorceress' Hat and Black demons, Jump three times then hold D for Black demons. The reward is the Giant Spoon. It has 70 attack damage and is very slow. It can be enchanted to the Giant Spoon of Doom.
- In the right door you will find a void room with a treasure chest in a very high position. You can't reach it with a jump or an Anti-gravity Potion, so you need the Octopus King's Crown with Obsidian so that the octopus summoned will form a stair to reach the treasure. You can also use a summoning tribal spear, pogo stick, the boots of introspection, and the teleport spell to build a stair case up to the top. Alternatively, with some patience (or a short spell cooldown period) it is possible to get up without chocolate items by equipping no weapon and boots of introspection, and using obsidian wall and fireball (red gloves optional for faster finish): Go about two thirds of the way through the room, then use obsidian wall, then use fireball repeatedly until the wall is about the height of your jump, jump on top and use obsidian wall again, repeat until you reach the chest. At the top is the Rocket Boots.
- Before go in the left door, put on the rocket boots and equip the monkey wizard staff. At the end of the dungeon toward the bottom, there is a treasure chest with a Unicorn Horn that will heal you in your future quests (like the pink gloves). At the end near the top, there is the Xinopherydon. It can be easily killed if you stay near the treasure chest and let the monkey wizard staff kill him. Acid rain can help, but use Black demons for critical damage. You will receive a Xinopherydon claw that doubles your damage.