Hello --
I tried out the Demon Assassin in single player last night. Great fun, and looking forward to seeing how he shakes up the online metagame.
However, I did experience one big bug. After my first death with him, once the timer expired I respawned and could play normally - but the entire screen was greyed out, as if I was still dead. The death noise continued to play as well. But, as I said, I could move, attack, capture flags, and even buy items and use my skill tree.
I decided to die again to see if it would re-set somehow. After I died the second time and the death clock expired, everything went back to normal. The world was full of color again.
I have a screenshot of this but am not sure how to post it.
-- NAc