10 DLC Bosses Harder Than The Main Game
6. Karstaag - The Elder Scrolls V: Skyrim: Dragonborn
In Skyrim, your main goal is to defeat a literal World Eater dragon, Alduin, before he destroys Tamriel and all the realms beyond it.
It sounds like a daunting task, but in reality, the fight with Alduin is a walk in the park. The real challenge is hidden inside the Dragornborn DLC with its secret boss, Karstaag.
Karstaag is a frost giant king who made his first appearance in the Elder Scrolls III: Morrowind. Though he was slain by the Nerevarine, you can actually summon his ghost in Skyrim to issue him a challenge... and get crushed.
If you've ever experienced getting launched into space by an angry Skyrim giant, you have an idea of what a frost giant like Karstaag is capable of. Not only does Karstaag possess the gravity-defying strength of his brethren, but he also deals additional cold damage and can summon a blizzard to make the battlefield more chaotic and deadly.
The duel with Karstaag is harder than anything you'll encounter in the main questline. But the effort is certainly worth it, as defeating the monster will grant you the power to summon him three times to fight by your side.