Have you ever wished that Hardcore Minecraft were REALLY hard? Well, there you have it. Same game, new experience. You better get those hands to craft some weapons. Or else.

This modpack starts hard, featuring:

Shooting mobs that deal an insane quantity of damage when unprotected (watch out!)
New mechanics with trees (they are now alive and growing!)
Vein miner capabilities
Hard reviving mechanics that involve pigs and clones (seriously, look at sync mod!)
New dimensions (and a full rework of the Nether)
New mechanics with the weather (WARNING: houses are useless against tornadoes)
No health regeneration
Disease system kill lethal plague (rat may be dangerously cute tho)
Town management mechanics
New mechanics with seasons
Just a little bit better than wolves!

Survival tips for noobs:

Weapons are friends, not foes
You should think about Pigwatts before any hard fight
There are some great weapons to kill great bosses, that come with great costs
You can't run out of space if you got extra dimensions
Health regeneration is not a thing anymore. So you really should get some rest every now and then

Here it is the mod list:

Nucleo Duro

Antique Atlas

AutoRegLib

Baubles

BetterFps

Camera Mod

CB Multipart

Charset Crafting

Charset Immersion

Charset Lib

Charset Storage - Barrels

Charset Transport - Carts and Rails

Chisels & Bits - For Forge

CodeChicken Lib 1.8.+

CookieCore

CoroUtil

Cyclops Core

DimensionalDoors

Dynamic Trees

Ender Storage 1.8.+

Engineer's Doors