The rest of the trailer is interspersed with first-person footage showing off the various weapons, like the tossable shield and what is basically a BFG crossbow. The whole thing ends with the ...

Also part of the Doom Anthology SteelBook is an awesome replica of the Doom series' BFG. The gun made a cameo in Quake II with the shooter's manual stating BFG stands for "Big, Uh, Freakin' Gun".