[general Rappan Athuk spoiler warning]
Last time, the players spent a decent amount of session time prepping for the battle, so we didn't get too far into it. However, they did make it into the temple with their army of NPC fodder. Since this is the party's second assault on the temple, its inhabitants have changed. A sizable portion of clerics and Orcus thugs were quickly wiped out by the party's wizard's well-placed, and empowered, fireball. Some Green Gargoyles did manage to get the jump on the party's rogue (who took to the air via a potion of flying).
Also...a Type II demon (a.k.a. a Hezrou) was waiting for them and appears to have successfully summoned something.... the party finds out what tonight.