Quake shifts and moves to alight on the shoulder of Archon 4
Bad guys
All three Shadow demons save vs. Aura of Menace
Babau 1 full attacks the Archon 1 and it dies
Shadow Demon 1 charges and pounces Archon 2 doing some damage
Shadow Demon 2 charges and pounces Archon 2 doing some damage
Shadow Demon 3 moves to Denrag and pounces. He does 11, 8 and 11 damage (partially cold but I don't see any cold resistance on the sheet)
The party is up!