Rightio, that was round I, done in different style than before. That is, I rolled all the d20s at the Gate and did the rest as "homework".
The scene after Round I
Kylara, Khalas, the chain, and Farviaan are just below the platform's upper level, who has just been cold ball'ed by the wizard. It is hard to discern what has happened up there from hereabouts though. (you stand inbetween No. 7 and No. 8 on the map, Khalas levitating a few feet above ground)
On the bridge (around about the No. 10 on the map), of the group, Tarinyon has been hit and poisoned, the rest of the group is fine. Of the derro, the crossbow wielders (Mr. Pick and Mr. Sword, out of simplicity) still carry these weapons, but are about to drop them. Mr. Pick looks in better shape, having been hit only by Zhadristan's bolt. Mr. Sword looks far worse, blood covers his body, but you guess he can take at least as much wounds as he has received so far.
The Savant looks doomed though. Not only has he lost his orientation somewhat (Stunned), but also lies prone and in his blood. Of the latter, you see a lot.
For the sake of speed, I assumed some folk's actions. That is Tarinyon cast a magic missile, while Sheiriya sent a bolt away. I left Xune as a bystander for the time being ... you see, there are so many males and footies around to dirt their hands ...
Actions for Round II required.