This one is even harder than my regular modpack. The early game is dominated by simple flint tools. Trees can not be punched and vanilla wood and stone tools are not available courtesy of No Tree Punching mod. Food Funk means your food spoils after a few days. And don't forget our old friend Tough As Nails.
Nights are pitch-black, zombies can dig to you and place TNT, skeletons are snipers and creeper behaviour is worse than you ever experience thanks to Hardcore Darkness, Epic Siege, and Clever Creepers. To top it all off a random Bloodmoon will change a bad night into a very bad night.
Nature is not your friend. Serene Seasons, General Disasters, Weather, Storms & Tornadoes and WildNature will keep you on your toes.
On the technical side we have oldies and goodies, Tinkers Construct, Construct's Armory, Buildcraft and Industrial Craft.
For more details please see list of mods included:
Animalium
AppleSkin
BetterFps
Bloodmoon
Buildcraft
Clever Creepers
Construct's Armory
CT TinyCoal
Epic Siege Mod
FoamFix
Food Funk
FPS Reducer
General Disasters
Glenn's Gases
Hardcore Darkness
Hwyla
Industrial Craft
JourneyMap
Just Enough Items (JEI)
No Auto Jump
No Tree Punching
Not Enough Items 1.8.+
Serene Seasons
Tinkers Construct
Tough As Nails
Waila Harvestability
Weather, Storms & Tornadoes
WildNature | A Wilder Experience
Zombie Players