Does Michael Myers Die? Why Is He So Weak?

If you recall, Laurie mentions in Halloween Kills that “the more he kills, the more he transcends.”

Now, this indicates that with each murder, Michael grows more powerful and proves just how invincible he is. Laurie’s suggestion virtually comes to life in Halloween Ends because while stabbing Officer Mulaney (Jesse C. Boyd) to death in the sewers, Michael appears to regain his strength with each jab of his kitchen knife.