What Power Outage?
What Power Outage? is an achievement in Halo 4. It is awarded for completing Chapter 4, Episode 5 of Spartan Ops without losing a generator on Heroic or harder. The achievement is worth 20 Gamerpoints. It is represented by a high voltage safety symbol.
What Power Outage? is one of the few Spartan Ops achievements that is actually easier to achieve in local play than in matchmaking. This is because playing local solo or co-op will spawn four Mantises on the map; two at the beginning and two behind the generators. When playing in matchmaking there are instead two LAAG Warthogs and two Gauss Warthogs, which are far more vulnerable, provide less fire power and require far greater teamwork.