Travel to the waycastle
Return to Gran Soren
Defeat the cockatrice
Report back to Aldous
After accepting this quest and before heading to the Waycastle, bring at least one Ferrystone and Secret Softeners or anything that will cure debilitations. Bring someone that can enchant weapons with lightning or at least use lightning-based attacks. When ready, head to the waycastle.
Upon arriving to the Waycastle, Ser Ravenn will then tell you to return to Gran Soren immediately. Quickly return to the capital using the ferrystone; otherwise, you’ll have to walk back. The southern gate will be sealed so you have to enter the city through the western gate.
Once inside, you’ll have to face a cockatrice. This monster can petrify your characters so make sure you have a good amount of softeners ready. It is weak against lightning attacks so use these often to deal critical damage to it. It’s other physical attacks are quite predictable but damaging nonetheless. You won’t be able to kill it unless you’re overpowered so keep dealing damage to it until it flies away.
Make your way to the Passage Gate and talk to Ser Camillus. He will take you instantly to Aldous. Talk to him to get your reward.