Here, THIS is rewrite of blaze's actions.
We all pour out of the vents into a large, rectangular-like room, not unlike the one we just blew up. A door slides open to reveal a giant horde of zombies hauling ass towards us. We all start shooting like crazy, and Percy throws a grenade into the horde. A zombie head flies out of it and latches on to Joseph's neck. He yelps in pain as it rips out a chunk of his neck. John rips it off and crushes it underfoot. The horde is still going strong when Joseph takes Percy's MAW and sets it to bait.
Percy: What the hell are you doing?
Joseph: Buying you guys some time!
He turns the gun on himself and fires it. Zombie bait splashes all over him.
Ryan: You crazy son of a bitch.
Devin: You got balls, Joseph, I'll give you that. Gonna miss you dude.
Jessica: Mhm, same here. All right guys, let's get going.
We all run away as the horde ignores us and runs toward Joseph. As we exit the room, I turn to see Joseph pull the pin string on his grenade belt. He explodes, taking the horde with him.
Devin: That makes his body count 761. More than yours, John.
John: Too soon, man.
Devin: True, true. So what's the plan?
Jessica: We're going to blow this place to high loving heaven.
Percy: Whoa little lady, who died and made you queen?
Devin: Joseph, duh. Besides, she's right, we can't let this place stand.