In this mod, there will be more tools, like hammers, more enemies, like mutant skeletons, more creatures, like cave dwellers, and a lot more. Herobrine will also accompany you in this modpack. You cannot defeat most of the mobs listed, but eventually, you will. Herobrine can be defeated if you summon him, cave dweller can be defeated with an iron axe and shield, mutant skeletons can be defeated with a stone axe. You can get a lot of tools from the mobs to make way better tools, especially if you go to the deep dark.