Xenophobia Achievement in Halo: The Master Chief Collection

This achievement can be obtained easily when going for "Classic" on Uplift Reserve. Since the aforementioned achievement tasks players in completing the mission without firing a shot, players wouldn’t need to pick up any weapons at all throughout their travels. As for using the Ghost as your go-to vehicle, don’t worry, this doesn’t count as using a Covenant Weapon (provided you don’t shoot the Ghost’s turrets at enemies).