Heretic Hero: Complete a Covenant level using only human weapons. (melee with covie weapons is fine except sword) 50G Batteries not included: Complete a level using only ONE plasma pistol with no pickups. 35G I love Shiela: Save the scorpion scripted to die on Metropolis. 20G This ring will make us brothers: On the Great Journey, save the two marines from the brutes. 20G Bet you I can stick it: Stick a total of 20 elites in the campaign or MP: 40G Heretic Hero 2: Find the heretic banshee on the Great Journey 10G We didn't have any fancy schmancy tanks! : Complete Metropolis without getting into the scorpion on heroic. 50G Bros to the end: Keep all marines alive in any UNSC level on heroic: 35G Me got good feeling about this: Save both the grunts in the first encounter in Oracle. 30G Graveminds: Find ALL skulls. 50G Just like old times: Complete a level using only dual-wield weapons 20G