Been playing solo with a barbarian. All major quest completed but no durlag tower, mage or werewolf island. Get sarevoks diary and other items, enter the Ducal Palace no problems. Cut scene plays out, fight starts with Greater Dopplegangers, prevented the death of both Grand Dukes Belt and Liia Jannath. Short cut scene, then fight with Sarevok starts again, everything seems normal.
Winski Perorate turns up; this is were things go awry. First attempt he appeared teleported Sarevok but did leave himself. Couldn't be damaged or interacted with. Reload. Same outcome. Third attempt, Sarevok and Wnski teleport out, but none of the dukes can be spoken to.
Travelled to the thieves guild, but the stairs inside arn't active. I tried moving locations with the console. Which moved me and had normal encounters there, but on entering the temple of bhaal - NO SEREVOK.
What to do? If I add him with console will I get the solo achievement? Will his helpers spawn as well? Should I just keep trying the coronation in the hope it plays out correctly?