See Fog

Make your adventures with the man from the fog scaring you...

Here the Scary Mod:

The Man From The Fog

From The Fog

Multiplayer Help Mods:

Simple Voice Chat

Sound Physics Remastered

Optimization Mods:

Rubidium

Embeddium/Rubidium Extras

Better Rubidium Video Settings Button

Shader Mod:

Oculus

Shaders:

SFLP-Shaders-Standard-All-Version

Chocapic13_HighPerformance_Toaster

Chocapic13 V6 Lite

...

THIS SHADERS MAKES THE GAME MORE REALISTIC BUT IS OPTIMIZED SHADERS

This pack adds two new entities both of which only spawn under certain conditions, the man from the fog will spawn at night and attack if you look at it. The corpse stalker spawns in caves and is more hostile than the man from the fog attacking the moment it sees you. The from the fog mod adds herobrine who doesn't do much other than spawn and stare at you from a distance. The Yung's better structure mods changes the base vanilla structures. 

Good Game :)