Killing Shunacha does not trigger whatever is supposed to happen next. Nathalie does not speak, and the Drake does not appear on the main floor. I have killed Shunacha countless times now, sometimes first, sometimes after the golems and the shielding spirits.
Sometimes he dissapears while I am fighting the spirits. Sometimes I can kill him with one blow after killing the first spirit.
I even reloaded to an earlier point in the game, before visiting the Trail of the Drake. Once I got to him, I still had the same bug. About to abandon the quest, please help.