yes there is a talking secret grant on the last level on you tube there is a video to show that here it is:
http://www.YouTube.com/watch?v=G-UcVYM3e9I&feature=related
no
None of the Halo's have any 'real' cheats, the only one is the lower your weapon one, which is just like Halo 3's.
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
in HALO 3 you are a Spartan and in HALO 3 ODST you are a Orbital Drop Strike Trooper (ODST)
halo 3 does not have any cheats
Halo 3: ODST will only be released on the Xbox 360. The are currently no plans to make Halo 3 or Halo 3: ODST available on any other console other than Xbox 360.
I would say Halo 3 ODST
no, all there is not any flood in halo 3 odst firefight
Halo 3 ODST is not for PC but Halo 1 and maybe Halo 2-3 are
Halo 3: ODST is the newest of the two, but not the newest Halo game.
h*** yes!
halo 3 odst, unlike halo 3, has no matchmaking, sorry