One of the most universally hated quests in is that to help Oskar Fevras recover from his possession. It's a quest that technically starts in Act One, when players can help the troubled artist escape the Zhentarim beneath Waukeen's Rest.
But the real trouble doesn't start until Act Three, when players reach the Jannath family estate and find the place haunted.
Oskar is betrothed to the lady of the house, yet his obsession over his former love has led to her ghost taking over the entire mansion.
The quest itself is interesting enough, but completing it requires the player's party to navigate through one of the most frustrating and tedious areas in the game, full of invisible ghosts and painful traps.
It's so bad that many players will simply skip the quest, rather than save Oskar to obtain his reward. But there are a few tactics that can improve the experience, and make helping this tortured painter less of a torturous experience.