From The Ash

Zombie Survival Pack. Where Monster spawns are increased and many dangerous events can occur.

This mod is still in progress and will be updated to make it more difficult.

Including Zombie Awareness allowing the monsters to hear your sounds. see your lights. and smell your blood... as well as increasing the quantity of zombies you can find.

Techguns to provide weaponry to hold off the hoards of undead.

Immersive engineering. Thermal Expansion. and Mekanism for your industrial base. designed to progress from one to the other.

Ancient warfare 2 to allow you to take a more "Medieval Approach" To holding off the Undead.. And to have other bands of survivors to fight.

Expect the mod to get Harder and Harder each update. as i find more mods to enhance the enemys.