Assassin's Creed Valhalla GMV ( Crossover Kassandra and Eivor )
Assassin's Creed Odyssey and Valhalla Official Crossover.
A free epic DLC to AC Valhalla, also check AC Odyssey as they have realised a new add on quest for that game as well.
I felt like this was a much needed add on for the game as Kassandra is obviously running around till the present time.