Excuse me if I am wrong in the translation, I am not English.
In the final mission, Year 1273 `` The Fall of Xiangyang ‘’, after building the first bridge and entering the first city.
A mission called ‘’ Sack the first city ‘’ is activated
Right at that moment the game crashes and after a few seconds it closes.
I have restarted the last mission of the campaign 3 times, and exactly that has happened, I have also tried to load the game several times. In any case, if I manage to overcome the error zone (by circling, or waiting for time) when I finish the mission with victory, the achievements are not activated either because I finished the Mongol campaign or because I survived with all the Huihui Pao. The achievements for that mission are simply not activated.