Neverwinter Nights: Hordes of the Underdark

As you progress, all side quests are completed. The main character has enough money to buy all the names from the Knower of Names, except for one of the most expensive (costing 500,000 gold). The save before the final fight with Mephistotel does not contain knowledge of his true name (the main villain himself is instantly killed by the summoned black blade of misfortune, the scroll of which is in the inventory). The character is a warrior/bard/ranger.