Excessive blood loss.
This player had no visible external injuries, and judging from the traces of blood flow, it would have taken at least five to ten minutes for a player to die from blood loss. Such a long time usually couldn't be achieved with props and characteristics unless someone was continuously restraining the player. However, if that were the case, not everyone in the carriage should have been annihilated; there should have been at least one survivor, otherwise the player wouldn't have died from excessive blood loss.
But the person did die.
His mouth was clean, whereas the mouth of the player who had been skinned had traces of blood and human tissue.
Xu Huo tried using the Appraisal Fork on this player and concluded that he had not been poisoned and there were no anesthetic components in his body.
"The Cannibal Player actually died from overeating!" another female player declared as she ripped open a corpse's clothes, "For a moment I thought she was pregnant."