This modpack was made to be difficult. Each player (by default) has 3 lives, they can't regain any lives unless they use the Sync mod to make clones of themselves. The extreme darkness will be difficult to traverse with grue waiting until its next victim walks in, the Rouge Like Dungeons gives excellent loot, but at what cost, and storms with tornadoes which will kill anything in it's path.

Serene Seasons (by Forstride)
Defiled Lands (by Lykrast)
Potion Core (by Tmtravlr)
Cosmetic Armor Reworked (by LainMI)
Shadowfacts' Forgelin (by ShadowfactsDev)
Signpost (by Gollorum)
Extra Alchemy (by zabi94)
ZeroCore (by ZeroNoRyouki)
CXLibrary (by cubex2)
IvToolkit (by Ivorforce)
Multi Mine (by atomicstrykergrumpy)
Grue (by Shinoow)
Mekanism (by bradyaidanc)
Redstone Flux (by TeamCoFH)
PlayerRevive (by CreativeMD)
Mekanism Generators (by bradyaidanc)
V0id's Smart Backpacks (by v0idwa1k3r)
Dirt2Path [FORGE] (by mallrat208)
Comforts (by TheIllusiveC4)
p455w0rd's Library (by TheRealp455w0rd)
iChunUtil (by ohaiiChun)
Reliquary v1.3 (by P3pp3rF1y)
Death Counter (by ohaiiChun)
Better Advancements (by way2muchnoise)
Tool Belt (by gigaherz)
Hats (by ohaiiChun)
SlimyBoyos (by Jaredlll08)
Morph (by ohaiiChun)
GraveStone Mod (by henkelmax)
Ore Excavation Integration (by BloodWorkXGaming)
Sync (by ohaiiChun)
WanionLib (by WanionCane)
RFTools (by McJty)
NetherEx (by LogicTechCorp)
Quality Tools (by Tmtravlr)
Portality (by Buuz135)
Extreme Reactors (by ZeroNoRyouki)
The Creeping Nether (by Dreadwing93)
Open Modular Turrets (by Keridos)
Tough As Nails (by TheAdubbz)
Minerva Library (by zabi94)
Spartan Weaponry (by ObliviousSpartan)
The Aether (by GildedGames)
Gotta Go Fast (by Thiakil)
Refined Storage (by raoulvdberge)
GravelMiner (by BlayTheNinth)
Wawla - What Are We Looking At (by DarkhaxDev)
ConnectedTexturesMod (by tterrag1098)
Barrels, Drums, Storage & More (by Funwayguy)
Champions (by TheIllusiveC4)
Zombie Players (by Corosus)
Thaumcraft (by Azanor13)
Food Expansion (by Lellson8)
No Recipe Book (by Seneschal_Luwin)
McJtyLib (by McJty)
EnhancedVisuals (by CreativeMD)
AstikorCarts [Horse Carts] (by MennoMax)
Mantle (by mDiyo)
Xaero's World Map (by xaero96)
UniDict (by WanionCane)
MrCrayfish's Furniture Mod (by MrCrayfish)
Obfuscate (by MrCrayfish)
Thaumic JEI (by Buuz135)
Simple Gravel Ores (by EpicSquid319)
Blood Magic (by WayofTime)
A Crude Start (by Tacusin)
More Furnaces (by cubex2)
Open Modular Passive Defense (by Keridos)
OreLib (by OreCruncher)
OMLib (by Keridos)
Yoyos (by jozufozu)
Doggy Talents (by percivalalb)
Mod Name Tooltip (by mezz)
LootBags (by Malorolam)
Advanced Combat (by SBlectric)
Craftable Horse Armour & Saddle [CHA&S] (by EwyBoy)
Hardcore Darkness (by Lumien231)
Fast Leaf Decay (by olafskiii)
Spawn Temple (by Iastre)
Bountiful (by ejektaflex)
The Twilight Forest (by Benimatic)
Just Enough Items (JEI) (by mezz)
Progressive Bosses (by InsaneGames_)
Baubles (by Azanor13)
MrCrayfish's Gun Mod (by MrCrayfish)
LibraryEx (by LogicTechCorp)
Patchouli (by Vazkii)
Aquaculture 2 (by Shadowclaimer)
Commons0815 (by ben_mkiv)
Knowledge Sharer (by rongmario)
Tough Expansion (by TheRealp455w0rd)
Inventory Pets (by Purplicious_Cow_)
Roguelike Dungeons (by greymerktv)
Guide-API (by TehNut)
Weather, Storms & Tornadoes (by Corosus)
CoroUtil (by Corosus)
Valkyrien Skies (by triode_)
CreativeCore (by CreativeMD)
Camouflaged Creepers (by georgetsak)
LittleTiles (by CreativeMD)
Refined Storage Addons (by raoulvdberge)
Mouse Tweaks (by YaLTeR)
DarknessLib (by Shinoow)
Giacomo's Fishing Net (by zacomat)
Dynamic Surroundings (by OreCruncher)
Chisels & Bits (by AlgorithmX2)
No More Punching Tree (by TheAwesomeGem)
TekTopia (by TangoTek)
No. Lives (by bright_spark)
Bedrock B Gone (by Karjah)
Tumbleweed (by konwboj)
DeathQuotes / Death Quotes (by lordcazsius)
Xaero's Minimap (by xaero96)
Just Enough Reactors (by BrainStone)
MalisisDoors (by Ordinastie)
NetherPortalFix (by BlayTheNinth)
Scannable (by Sangar_)
MalisisCore (by Ordinastie)
Sound Filters (by Tmtravlr)
Tinkers Construct (by mDiyo)

Dragon's Keep Hardcore

A Crude Start

Advanced Combat

Aquaculture 2

AstikorCarts [Horse Carts]

Barrels, Drums, Storage & More

Baubles

Bedrock B Gone

Better Advancements

Blood Magic

Bountiful

Camouflaged Creepers

Champions

Chisels & Bits - For Forge

Comforts

Commons0815

ConnectedTexturesMod

CoroUtil

Cosmetic Armor Reworked

Craftable Horse Armour & Saddle [CHA&S]

CreativeCore