I need help with the Catch Skull on Halo 3???

[Poochimacrakin]

I don't destroy any of the Wraiths but the skull is not there. I'm playing on normal from the beginning of the level. Help???

 

[2Good4U]

my friends have told me the same thing but on my halo3 it was still there and all i did was get in one of the 2 ghost before u go to the building and grenade jumped really quick on it and got it.ur team or groups with the warthog try to destroy the wraithes so mabe try that.i was also using co-op

meant to say is kill ur teammates so they dont kill the 2 wraiths