Ending was definitely the lowest point of the story. Felt very half-assed and anti-climatic. Didn't help that the game felt like it should've ended roughly 5-10 hours before it did.
Hah, if you want anticlimactic, you should read all 7 of the books. I loved them all to death but the ending definitely felt like "fuck it, this needs to end."
I actually liked my ending of the game and felt it nicely wrapped up the game, the game series, and the books pretty well.