Destroy three power sources II | Forerunner Halo 4 Guide
Last update: 11 May 2016
When door at the end of corridor open, immediately kill an enemy on left who'll be trying get into a Banshee. Get inside yourself and destroy two other Banshees.
In case of need, on the left side you can see another Banshee. While flying, try to kill as many enemies as you can. But exit a vehicle, when it's heavily damaged.
And again you have to destroy three power sources. First is located on the left from this place, the remaining two on the other side. When it's done, climb up on a bridge (screen), into an entrance between two cores, opposite to the entrance to this place.