But I just saw a Hannity clip of the Police going to his room & I can hear him still firing
Yeah, he shot through the door and wounded a security guard, they had to back off at that point and regroup. During that time he stopped shooting, possibly even shot himself at that point. If he wasn’t shooting, no need to risk officer safety. They were also waiting on the SWAT team.
So, the police arriving at the door 12 minutes after the shooting started effectively stopped the carnage. Good work by the police.