Damn! I was hoping the webs would keep these moss-lickers busy long enough to dispatch shinypants here. Okay, I say we fall to the north, so we're not penned between two attackers. We need all of our fighters on one front. I'd suggest south, but we can't give the tunnelgoers the ranged attack options. I realize we're risking being trapped with an advancing party from the north, but I'd rather take that risk.
Hennet, cast that sleep as soon as you see the newcomers- good idea. Anyone near the mouth of the web-fire-tunnel, I advise that you move away. Everyone, try to move north- like this!
Moving to L19, firing arrow at the beetle