Rookie in the fight!-5G Complete 5 set's of fire fight on single player with legendary difficulty activated. Dropin and shockin-5G Kill All enemy's in firefight mode before the next wave arrives. CaN i HAz rEcOn?-0g Unlocked all vidmaster achievements in halo3 and halo 3ODST and earned recon armor. Chieftain Chopper-10G In campaign or firefight mode kill 77 chieftains with out any one els dealing damage to them.