There are many mods in this modpack with numerous features outlined as following:
-3 extra dimensions (Blue Skies & Twilight Forest).
-A more challenging portal system (End Remastered & YUNG's Better Portals).
-Tons of structures and Dungeons.
-Powerful artefacts/trinkets including Enigmatic Legacy.
-Demon Slayer mod and Animation.
-Changes to Nether and End to make them more immersive
-Dragons and harder bosses (Ice and Fire & Progressive bosses).
-Quality of Life upgrades.
-Extra Armour tiers and types.
-Reworked Enchanting (Apotheosis)
-Farmer's Delight and its many add-ons.
-Spartan Weaponry and its many add-ons + Tetra.
-Many new blocks and variants for builders.
-Caves and Cliffs Backport for better caves and better cliffs.
-Multiplayer mods (Plasmo Voice, Essentials mod).
-And many, many more....
Enjoy!