How to fix game over in the dungeon stage

We would like to let you know that, due to a design flaw, we failed to explain to players that if they argue with Gregory in the tower (before going up the stairs to Tuke's lair), then no one will help them out of the dungeon.

In this respect, the mistake is that this is not clear to the player: you can only complete the game if you don't argue with Gregory.