The Twelve Days of Marathon Christmas

On the first day of Christmas Bungie gave to us:

Twelve Durandals bossing,
Eleven Troopers firing,
Ten grenades a-hoping,
Nine Hasturs Forging,
Eight magnum bullets,
Seven sevens sevening,
Six Tics a-laying,
Fiiiiiiiiiiiiiiiiiiiiiiiiiive Purrrrrrrrrrrrrrrrrrrrrrple Poweruuuuups!
Four dead Pfhor,
Three grendel beasts,
Two circuit chips,
And a grenade launched into BoB's face.