This is a modpack made with hardcore in mind but it can be played in survival. Its a desert survival game made to be difficult with radiation, heat, and more! The modpack quest progression is very loose and can mostly be ignored if you already know what to do. The quests are built as guides so you don't have to look it up outside of the game. It can be single player or multiplayer.

Features:

Radiation
Temperature
Random structures and temples
New weapons and equipment
Guiding quests
New abilities
Robotic parts and the ability to become an android
New enchanting system
New machines and multiblock structures
Massive power generation and power storage
Many ways to fly
New crafting recipes
New bosses
New plants and flowers

Mod List/Credits:

Apotheosis
Apple Skin
Applied Energistics 2
Astral Sorcery
Attribute Fix
Baubles
Bookshelf
Botania
Brandons Core
Chisel
CodeChicken Lib
Controlling
Corpse
Craft Tweaker
Connected Textures
Cucumber Library
Dark Utilities
Draconic Evolution
Enchantment Descriptions
Ender Storage
Ex Nihilo: Creatio
Forgelin
FTBQuests
FTB Library
Simple Harvest
Hwyla
iChunUtil
Industrial Craft
Item Filters
JEI
Journey Map
Lonely Island
Mahou Tsukai
Mantle
Matter Overdrive
McJtyLib
Mekanism
Mekanism Generators
Modular Powersuits
Mystical Agriculture
Mystical Creations
Hbm's Nuclear Tech - Extended Edition
Numina
Patchouli
Placebo
Redstone Flux
RFTools
Roguelike Dungeons -- Fnar's Edition
SuperMartinjin642's Core Lib
Sync
Tinkers Construct
Tough As Nails
Traveler's Backpack
VeinMiner
Forbidden and Arcanus
Uppers
Waystone
JER
Openblocks elevator
Morpheus (Severside)

Wasteland Desert Survival