Like Raiden, it is unlikely that he can ever be truly killed, since he is a god and thus immortal; if his mortal form is destroyed, he will simply reform himself, usually back in the Netherrealm where he was originally banished.
He can ever be truly killed. This was like Raiden. He is a god and thus immortal. This is unlikely. He will simply reform himself. This is usually. This was like Raiden. He was originally banished. His mortal form is destroyed.