When Commander Shepard arrives at Hermes Station on Aite, Dr. Upon arrival on Aite, Archer directs Commander Shepard to prevent the escape of the rogue VI that has taken over the facility.

Archer is the only surviving member of the Project Overlord research team. Additionally, Overlord's assignment locations include a few upgrades Shepard can find, including one upgrade for Heavy Skin Weave, that can be useful in the endgame missions. Gavin Archer is the chief scientist of Project Overlord at the Cerberus facility on Aite.

Due to its challenging enemies and lengthy campaign, it is not a good idea to try and complete Overlord early in the game, especially not in the mission countdown between Horizon and the derelict Collector Ship. Though players can technically begin Mass Effect 2: Overlord any time they feel it fits narratively, many fans choose to save it as either the last thing they do before retrieving the Reaper IFF and starting the endgame Suicide Mission, or immediately after surviving the Suicide Mission. There are seven Mass Effect 2 Soundtracks, the Mass Effect 2 Original Videogame Score (and its Digital Deluxe version) and six supplemental albums: Mass Effect 2: Atmospheric, Mass Effect 2: Combat, Mass Effect 2: Kasumis Stolen Memory, Mass Effect 2: Overlord, Mass Effect 2: Lair of the Shadow Broker, and Arrival. Heavy Weapons will be an especially useful weapons class during these assignments, as there are many power cells available to replenish ammo. Overlord features difficult mech and geth enemies, so it may be beneficial to wait to complete this quest until later in the game when Shepard has researched and unlocked more armor upgrades, heavy weapons, and weapon upgrades.

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