Filge's Operating Theatre Encounter

I finished working out this encounter including the battle map and the written text. One of the things I found interesting with designing both this encounter and the battle in The Feral Dog is that encounters with humans and their ilk are not as problematic as I initially thought when I reviewed the rules for monsters. Sure Filge does have more hps then a standard character of this level (though not actually as much as a PC has after counting any significant number of healing surges) but he does not really have as much as a 'monster' equivalent. In other words you do get that 'glass cannon' effect when fighting NPC classed characters - more powers and even more powerful powers in general but not as many hps. Filge - for all his power is actually the Achilles heel of this encounter - if the PCs concentrate on him they can win a tough fight without having to actually kill all his zombies. Of course he'll try to avoid this but I suspect that this is the easiest way for the PCs to win this fight.

Here are the files for this encounter. I hope you enjoy them.
Filge's Operating Theatre Battle Map
Filge's Operating Theatre Encounter 1.0