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.

Tips
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 firepower and require far greater teamwork.

The best strategy is to hole up and guard around Generators. Ignore the Phantoms landing far away from the Generator, but if possible destroy all Phantoms that are landing near the Generator before it can drop off infantries. Although it's difficult if the player plays alone, it's better to play co-op for this. Two players at Heroic guarding the Generator using Mantises were more than sufficient to earn this achievement.