Hi all, sorry if this has been clarification (or fixed) somewhere, but I can't find it it's bugging me about an otherwise awesome scenario....
From A7: "If the PCs have removed at least two sacred prisms... when Ghalcor's spirit goes dormant... demons... resume their destruction... the scenario is on a countdown... at the same time, from outside the tower, Ollysta... rushes inside to alert the PCs."
From A8: "On initiative count 15 when they PCs enter the area, the shemhazain... On initiative count 10, Ollysta arrives..."
From sidebar: " Ollysta and two crusaders arrive through the southern door"
So the countdown starts (and Ollysta starts towards the PCs) when the ghost of Ghalcor rests/stops talking. Assuming the PCs hear the demons starting the destruction (DC10Perception), it's a good bet they open the door right away.
This means Ollysta goes rushing from "outside the tower", assumedly avoiding/ignoring the shemhazain, through the entire tower and to the south door IN ONE ROUND!?!?! Then on round two, charges the shemhazain anyway.
On the other hand, the "dramatic timing" works great if the PCs do the opposite of most, and wait/plan. But that makes no sense on the bad guys' end (other than giving the demons more rounds to damage the control panel).
Also, although it's an admittedly far -fetched possibility, there's no instruction given for how long Ollysta is "delayed" if A3 is bypassed and, more importantly, what the shemhazain does to the tower/PCs before she gets there.
Why not have her charge the shemhazain from outside on the first round after it blasts a hole in the wall - right after the PCs enter the room?