Kill Rusty Cogsprocket (+2 level, even con) Use health items potions after Rusty Cogsprocket if at all possible. He will spawn a cog-work and not be able to take damage - try to kill him very quickly to prevent.
Kill Maldreya (again) (+3 level, one up) then STOP. Don't attack the epic. The stuns are for this fight - she will heal herself completely, up to five times in the same fight.
Wait for Lucan D'Lere and Opal Darkbriar's conversation to end