Hah, beat the game with Scorpion and you will know better.

because scorpion was the one chosen by the elder gods to retrive the komidogu after he got the amulet form quan chi, Shuginko was chosen by damashi who he thought was an elder god but damashi is actually a fake illusion light ONAGA made and lyed to shuginko believing he was an elder god and that shuginko was chosen. the REAL elder god chose scorpion and when they found out shuginko was actually HELPING onaga return they sent out scorpion to stop him from getting the last komidogu but it was too late.