This modpack adds many new things to the game. It is a medieval fantasy modpack, so it adds things from both those genres. It adds a vast variety of medieval themed weapons, including new bows, longswords, halberds and battleaxes. It also adds in medieval soldiers which spawn around the map. It adds many new items and armour. As it is a fantasy genre too it adds in creatures from fantasy including serpents, dragons, gorgons and other creatures of this type. It adds in new gear for many of these creatures too. The modpack adds in new structures and alters many structures changing the layout, appearence and loot, it also allows for biome specific structures to spawn in other biomes.
The modpack also adds in many new biomes, it adds in new bosses and mini bosses and even a new dimension.
And, that's about it.