bam.
It took me 14 hours to beat the Library. I am now afraid of Halo. I still have nightmares.
BTW, a shotgun doesn't have bullets unless it's a slug. it has anywhere from 6 to hundreds of steel pellets encased in front of an ass-load of gunpowder. There are 12 pellets in the Halo shotgun, and I think 9 in Halo 2. I had to count. I know the flight pattern. I am afraid.