Dodge a Raven Seeker Missile in a Melee game.
Win a 1 vs 2 Multiplayer Custom Game with no Allies against 2 Medium A.I. opponents.
Kill 50 units with a single Penetrator Round in the “Belly of the Beast” mission on Hard difficulty.
Beat the Terra-tron on the Lost Viking arcade machine.
Use the A.R.E.S. to kill the Brutalisk in the “Piercing the Shroud” mission on Normal difficulty.