go to were the beacon is flashing on the map and there will be a statue in the middle look around it but up at the sky an there will be a sniper rifle hanging from some wires then the hold rb request should pop up.
During the main mission.
It is on Data Hive
find out todayAnswerHalo 3: ODST is awesome! It is recommended for halo fans, especially if you play it in order - Halo Wars, then Halo: Combat Evolved, then Halo 2, then ODST, then Halo 3! IT's GREAT! Trust me.
the mystery is where your ODST team is the things you find are the clues
in HALO 3 you are a Spartan and in HALO 3 ODST you are a Orbital Drop Strike Trooper (ODST)
Try http://rampancy.net/sheetmusic/halo/
You will eventually run into it.
Halo 3 ODST will be released on September 22
Yes you can get the mongoose on Halo ODST
I am not sure. I don't work for binge but I do know that halo 3 odst takes place in Halo 2 and they were going going to name It halo 4 odst but they named halo 3 odst
Halo 3 ODST is not for PC but Halo 1 and maybe Halo 2-3 are
you need halo 3 ODST to access the halo reach multiplayer beta