Updated the model

Added scream when killing a NPC or Player
Fixed bugs
Breaks down doors
Teleports if your too far away from him
When you kill him, the model will be remove, rather than it being there until you undo it.
If npc's are blocking his way, he will kill them.
If the ai_disabled is true, he will not chase you anymore.
Made him so he is difficult to kill.
Lose Target Distance is set higher.

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