Defiant contains three new maps for Halo: Reach. Unearthed is a new Firefight map with a heavy vehicle focus. A main UNSC base with multiple tiers and points of egress is surrounded by an unobstructed dirt road. This leads to a different kind of Firefight experience. Use of the rocket turret-equipped Warthog is an absolute must to score high and address the repeated drops of Ghosts and Wraiths, and they're a big help against the Hunter reinforcements that pop up every few waves.