Is there any significance to the fact that they are now out of the nave and up in the gallery? It seems like the last panel indicates they'll be staying in the gallery for awhile unless Vampire Durkon can go gaseous form.
Looks like Roy just made his called strike to stake Durkula. If not, Roy is more boned that you calculate, each negative level also reduces the victim's HP by 5, so since each vampire wallop is two levels, Roy is 20HP lower.Roy may have only 170-180 hit points. He's taken about 75 damage from harm, 30 from inflict serious wounds, 26 from flame strike, and 13 from a vampire slam attack. That's 145 damage............ That hasn't happened, and he's now basically lost.
A creature takes the following penalties for each negative level it has gained:
-1 on all skill checks and ability checks.
-1 on attack rolls and saving throws.
-5 hit points.
-1 effective level (whenever the creature’s level is used in a die roll or calculation, reduce it by one for each negative level).
If the victim casts spells...
What are the chances that Durkon vampirised either of those priests he fed on? Because if he did, there's another serious flaw in Roy's plan: There may be two backup Clerics of Hel ready to step in and be her voting proxies if Durkon is taken out of the picture.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.