These videos are all of the Keep that Lord Nasher gives you. In them you see a whole bunch of different Undead creatures attacking your keep. You have an army of defenders appear in your party bar on the right hand side of the screen and you see the siege equipment landing on your keep's walls as you attempt to throw the defenders down, kill them, and destroy the siege equipment. It's really quite cool.
10 - A Masterpiece, Genuinely Groundbreaking 9 - Outstanding, a Must Have 8 - Excellent, Recommended to Anyone 7 - Very Good, Deserves a Look 6 - Good, Qualified Recommendation 5 - Fair, Solid yet Unremarkable 4 - Some Merit, Requires Improvements 3 - Poor Execution, Potential Unrealized 2 - Very Little Appeal 1 - Not Recommended to Anyone