Tsavo highway and Floodgate
Over load the map with trip mines
You have to set a Trip Mine to keep spawning.Then you keep throwing Trip Mines in a pile till they explode.This will overload the map and the Guardians will not shoot you.
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
13
ghost town and covenant
Chieftains are one all the levels except floodgate, Cortana, and Halo.
pick one up and press X. Its that simple.
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.
If by "halo 3 maps" you mean the Halo 3 Heroic, Legendary, Mythic and Cold Storage maps, then yes. However to play campaign levels, you must actually advance in the game to get to them.