Duskfall

Duskfall is a somewhat vanilla-like horror experience which aims to make Minecraft scary, but without sacrificing smooth gameplay. In this modpack there are the Catacombs, Entire pvp system overhaul. Custom weapons, More mobs, Spiders crawling on walls, Mobs coming out from underneath the ground, and Custom structures like Crypts where you can find Great Loot!

Using the included shaders is highly recommended