424 guided challenges comprised of: 35 referring to Spiders 34 targeting Zombies 35 with regard to Skeletons 20 concerning Dungeons 34 accommodating Endermen 31 regarding Creepers 27 dealing with Slime 10 with reference to Silverfish 14 involving Cave Spiders 23 related to Zombie Pigmen 27 connected with Ghasts 20 relevant to Magma Cubes 28 on the subject of Blaze 23 about Wither Skeleton 25 handling Wither 38 on the Ender Dragon Plus, another 129 optional bonus challenges to further maximize your skills With Rocky's books, you'll never run out of things to do in Minecraft again. Find individual hostile mob challenge editions by searching for "Rocky's Little Books.""