Verin doesn't do any meaningful damage. Her sword slips right into the lead zombie and then right back out, but he doesn't seem to mind. However, on the positive side, she effectively blocks group 4 into their room, and only one of them can attack her.
@JoshuaMabry seems to be unavailable, so we'll go ahead and throw Turchuk at group 2, with the understanding that I will not kill him accidentally while he's gone. He manages to likewise block them into their room.
Zombie come slowly streaming out of the other rooms. They're not fast at all, so you have time to deal with them. Only one reaches someone, and the unlucky one is Verin, but the one that swings at her from behind falls apart as soon as it does. The other group is heading for Turchuk, the other two being unseen.
