Easy Pyramid Structure

Summary
This is intended for those who either didn't elect to try the Early Banshee trick or are stuck at the part of "If I Had A Super Weapon."

Proceed out to the rock bridge & kill all of the Covenant troops on the bridge. If you can, try to take out the Covenant Tank (Wraith) & the Elite(s) on the canyon floor below with the rocket launcher from the brige. If you can't clear the enemies below, don't worry, but just be careful with this next phase. Then line yourself up with the concrete beam coming down from the Pyramid Structure. Take a step or two back, then run forward & jump toward the spine of the beam. Finally, after landing on the beam, carefully turn around & walk down the spine to the canyon floor, but be ready to take out the enemies if you didn't take them out from on the bridge. The end result, you can ascend the pyramid structure with no Covenant resistance along the way until you open the first set of blast doors at the top.

You can also just walk up the spine to the top of the pyramid structure for an even easier time.