Guides / Mass Effect 2 (Legendary Edition)

Collector Base

Mass Effect 2 (Legendary Edition) guide · Final mission

Commander Shepard leads the Normandy crew through the Omega 4 Relay to assault the Collector Base and rescue surviving crew members. The squad must infiltrate the facility, perform specialized tasks like venting heat and maintaining biotic barriers, and ultimately destroy or secure the facility. The mission concludes with a climactic encounter against a Human-Reaper Larva.

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Element Zero Cache: On the main path shortly after disembarking the Normandy in the infiltration sectorRefined Iridium: In an alcove near the first heat vent consoleRefined Platinum: Located along the walkway before the biotic barrier escort sequenceRefined Palladium: Near the platform terminal prior to the final descent to the central core

Enemies

Collector Drone

Weak to Biotic Warps, Armor-piercing ammo

Basic infantry that Harbinger can possess to grant extra barriers and elevated combat stats

Collector Guardian

Weak to Biotic Warps, Overload/Shield disruptors

Carries a handheld energy shield and possesses superior defenses compared to basic drones

Collector Assassin

Weak to Biotics, Armor-piercing ammo

Equipped with a particle rifle or sniper system that deals immense damage at range

Harbinger

Weak to Heavy heavy-damage weapons, Warp, Incinerate

Takes direct control of regular Collector troops, gaining regeneration and firing tracking energy blasts

Scion

Weak to Heavy weapons, Warp, Incinerate

Emits shockwave attacks that bypass cover and features heavy armor

Praetorian

Weak to Heavy weapons, Warp, Incinerate

Floating monstrosity with heavy armor and barriers that periodically triggers a ground-slam death-burst

Husks

Weak to Area-of-effect powers, Shotguns, Cryo Ammo

Swarming melee enemies that rush the squad in large packs

Abomination

Weak to Long-range weapons

Husk variant that detonates upon death, dealing explosive damage to nearby units

Human-Reaper Larva

Weak to Heavy weapons targeting weak spots (eyes and chest core)

The final boss suspended over a chasm; exposes weak points while preparing powerful energy attacks

Tips

Assign Legion, Tali, or Kasumi to the vents during the infiltration phase, as other specialists will fail to hack the door in time.
Choose Garrus, Miranda, or Jacob to command the fireteams to ensure the survival of both team leaders and the tech specialist.
Select Samara, Morinth, or Jack to maintain the biotic field to ensure no squad members are carried off by the seeker swarm.
Send an uninjured, loyal combatant like Mordin, Tali, Jack, or Kasumi as the crew escort to guarantee the rescued crew reaches the Normandy safely without taking heavy combat roles away from the final hold-the-line defense.
Do not take the squad's strongest defensive anchors (Garrus, Grunt, and Zaeed) to the final boss fight, as leaving them behind is critical to keeping the remaining team alive while holding the door.
Destroying the four support tubes under the platform during the first phase of the Human-Reaper battle causes it to fall into the abyss before it returns for the main confrontation.

Not listed for this area: secrets, shops and people.

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Derelict Reaper

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