Easy: either the MA5 series assault rifle or the M6 series pistol Normal: Mythic Heroic: Hunters show little respect towards grunts and jackals, but do have respect for the elites. But they rarely even communicate with their fellow Covenant races at all. Legendary: Sgt. Johnson is immune to Flood because of he took part in the ORION/Spartan 1 project. However, they used the fact that he had Boren's Syndrome from too much radiation from plasma grenades as a coverup saying that was what caused the immunity, but it was really his augmentations.