(CREATORS NOTE this is a FAN-UNIVERSE NOT CANNON)
You are an ODST in the library alone with the oracle named, 343 GuiltySpark. Master Chief has died by a lucky Elite Zealot. You are humanities ONLY hope!!
You have a modified suit, that is a prototype. Half spartan, half ODST, and half marine armour, aaaalll combined into one. You carry out the ai known as Cortana, making sure it gets back to either another UNSC frigate, or the pillar of autumn.
As you walk through the halls of the library shotgun in hand...you hear something...behind you...breathing heavily...you turn around...and see a HUGE combat form...in fear you toss a plasma grenade at its neck and IMMEDIATELY dive out the way, quickly scrambling back yo your feet and running!! (Also don't hesitate to be filthy or shit, I don't care)