Very large open world, and so much side quests to keep you busy! What is amazing is how they implemented things that happened in history and even the lore of King Arthur!!
You can still do stealth, but as a viking, you have the option to headcharge into battle, just by simply sounding the horn.
I just wish that the Dawn of Ragnarok could've been great as well, and this would've been a title that will be truly remarkable.