This is a modpack that tries to be simple and complex at the same time, Balanced but difficult at the same time.

Features
Adventure: Add new mobs that greatly increase the difficulty, preserving the appearance of the game. The generation of biomes is improved.
The caves are more interesting to investigate. New structures are added in the caves. There are new dimensions to explore and get unique items.
Technology: There are basic technology mods to be able to create automated systems.
Difficulty: It is difficult at the beginning due to the large amount of mobs added and the new mechanics of food.

Requirements
Minimum 3 GB of RAM

List of mods

Technology

Applied Energistics 2 (by AlgorithmX2)
Thermal Expansion (by TeamCoFH)
Thermal Dynamics (by TeamCoFH)
Thermal Innovation (by TeamCoFH)
Thermal Cultivation (by TeamCoFH)
Thermal Foundation (by TeamCoFH)
Industrial Foregoing (by Buuz135)
Integration Foregoing (by Jackyy)
Forestry (by _ForgeUser7678633)
Magic Bees (by MysteriousAges)
NuclearCraft (by tomdodd4598)
RFTools (by McJty)
Redstone Arsenal (by TeamCoFH)

Adventure

[ANGRY PIXEL] The Betweenlands (by MrCompost)
The Twilight Forest (by Benimatic)
Botania (by Vazkii)
Mowzie's Mobs (by bobmowzie)
Special Mobs (by FatherToast)
Primitive Mobs (by Daveyx0)
Avaritia 1.1x (by brandon3055)
YUNG's Better Caves (Forge) (by YUNGNICKYOUNG)
YUNG's Better Mineshafts (Forge) (by YUNGNICKYOUNG)
Artifacts (by ochotonida)
Better Compass (by Lemonszz)
Baubles (by Azanor13)

Cosmetics

ConnectedTexturesMod (by tterrag1098)
Mob Amputation (by ohaiiChun)
Mob Dismemberment (by ohaiiChun)
ItemPhysic Lite (by CreativeMD)
Sound Filters (by Tmtravlr)
Back Tools (by ohaiiChun)
EnhancedVisuals (by CreativeMD)

Food

AppleCore (by squeek502)
Pam's HarvestCraft (by pamharvestcraft)
Cooking for Blockheads (by BlayTheNinth)
Hunger Persistence (by squeek502)

Others

Just Enough Items (JEI) (by mezz)
Just Enough HarvestCraft (JEHC)
FTB Utilities (by FTB)
Quark (by Vazkii)
CoFH World (by TeamCoFH)
UniDict (by WanionCane)
Fast Leaf Decay (by olafskiii)

Morpheus (by Quetzi)SwingThroughGrass (by exidex)

Performance

FastFurnace (by Shadows_of_Fire)
FastWorkbench (by Shadows_of_Fire)
FoamFix (by asiekierka)
BetterFps (by Guichaguri)
Phosphor (Forge) (by jellysquid_)
VanillaFix (by Runemoro)

Libraries

Multi Mob Library (by Daveyx0)
ArtemisLib (by Camellias_)
Tesla Core Lib (by face_of_cat)
FTB Library (by FTB)
LLibrary (by _ForgeUser11902522)
Patchouli (by Vazkii)
WanionLib (by WanionCane)
GunpowderLib (by Jackyy)
McJtyLib (by McJty)
Redstone Flux (by TeamCoFH)
CodeChicken Lib 1.8.+ (by covers1624)
CoFH Core (by TeamCoFH)
CreativeCore (by CreativeMD)
AutoRegLib (by Vazkii)
iChunUtil (by ohaiiChun)
Shadowfacts' Forgelin (by ShadowfactsDev)
Placebo (by Shadows_of_Fire)

It is necessary to install optifine for best performance.

BTTQ Pack