No
Be player 2 in the halo 3 co-op campaign. Or, play the Arbiter levels in halo 2.
well what you do is beat all levels on halo 3 then you get the cool armor
yeah look at best buy
ghost town and covenant
Chieftains are one all the levels except floodgate, Cortana, and Halo.
Tsavo highway and Floodgate
I am pretty sure over twenty levels unless one level equals all of the night then like 4 :P
id say cod4 cause you have so many levels you can reach
they are hidden around the campain levels i forgot whear most of them are
you hav 2 complete the game
If by parasites you mean the spores on the levels floodgate,cortana and halo no they do not count as kills so sorry.