Ok, that last post - tactic here is to keep Tall & Gruesome from using his sword, and bypass him. Paladin obliterates the relatively thinner wall of skellys and zombies with Turning, and Keystone lands an short exchange of fisticuffs with the (hopefully) unarmed dead knight. This should keep all parties busy or incapacitated enough for us to get away. Bonus of punching a Death Knight (I'm assuming). Who all can say they did that?

Provided that the knight can't immediately recover his weapon, of course. If he can, we bank right and go out the way we came in, hacking and swinging, regardless of the higher density of bad guys. Then we look for a more defendable position. We're both constitute fighter-types, we can run a long way before tiring out.