Halo 3: Tower of Treachery - Custom Campaign Mission

This mod is available on the Steam Workshop. It was created by Skorly. I also played the mod on Normal difficulty.
Master Chief has been tasked to disable the defenses of a Forerunner structure now under the control of the Covenant. As the Master Chief goes deeper into the structure, he uncovered a secret that was best kept locked away.

[@ruthlesstoothpaste352]

Why weren’t you able to dual wield?