Guides / Mass Effect 1 (Legendary Edition)
Virmire: Saren's Facility
Saren's breeding and research facility on Virmire serves as the site of a critical STG assault, the revelation of Sovereign's true nature, and a tragic squadmate sacrifice.
Getting there: Unlocked after completing two of the first three story worlds (Therum, Feros, or Noveria); requires traversing the surface in the Mako, confronting Wrex at the Salarian Camp, and launching the foot assault past the exterior gatehouses.
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Before you leave
- •11 missables here: what locks each one out is under it. See the checklist · All missables in Mass Effect 1
- •Activating the Prothean Beacon triggers the Sovereign encounter and permanently seals the lower facility doors, locking out all previous rooms.
- •Releasing the upper captives forces an immediate firefight with unarmed, broken prisoners.
- •The squadmate you choose not to rescue will be permanently abandoned to perish in the nuclear blast along with all their gear.
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Items
0/12Route
7 steps- 1
Camp Preparations and Infiltration Choice. Prepare at the Salarian Camp, pick Kirrahe's leader, and breach the facility.
⚠ Embarking on Virmire if it serves as your last plot world will bar you from completing remaining Citadel assignments.
- 2
Breaching Base Entry and Maintenance. Clear Base Entry, defeat geth forces, and disable security alarms at the console.
⚠ Triggering the alarm diverts geth reinforcements directly into Captain Kirrahe's forces, which can lead to his demise.
- 3
Exploring Detention Cells. Explore detention cells, manage captive salarians, and optionally free Ganto Imness.
⚠ Releasing the upper captives forces an immediate firefight with unarmed, broken prisoners.
- 4
Cleansing the Cloning Labs. Clear Cloning Labs of husks, Krogan Warriors, and Dr. Droyas while looting gear.
⚠ Rushing straight into husks can result in devastating close-quarters electrical AoE blasts.
- 5
Interrogating Rana and Saren's Office. Decide Rana Thanoptis's fate and activate the Prothean Beacon in Saren's office.
⚠ Activating the Prothean Beacon triggers the Sovereign encounter and permanently seals the lower facility doors, locking out all previous rooms.
- 6
The Gantry Push and Bomb Deployment. Fight along the upper gantry, deploy the nuke, and choose extraction destination.
⚠ The squadmate you choose not to rescue will be permanently abandoned to perish in the nuclear blast along with all their gear.
- 7
Duel with Saren. Duel Saren Arterius on his glider until he flees, then extract before detonation.
⚠ Standing out in open lanes leaves you completely unprotected against Saren's lethal heavy rocket bombardments.
Choices here
6| Choice | Options and what happens | Most players pick |
|---|---|---|
| Kirrahe's Team AssignmentBefore launching the facility assault | Send Ashley Williams: Ashley temporarily departs your active squad to support Kirrahe's unitSend Kaidan Alenko: Kaidan temporarily departs your active squad to support Kirrahe's unit | |
| Base Security Alarms ConsoleAt the Base Entry security console | Disable Alarms / Draw them to Shadow: Pulls geth forces toward Shepard's position, helping Captain Kirrahe survive the mission (+8 Paragon)Sound Alarms: Diverts geth reinforcements toward the salarian strike team (+2 Renegade), which can lead to Kirrahe's death | Disable Alarms / Draw them to Shadow |
| Upper Detention CellsIn the upper detention cell block | Open the Cells: The indoctrinated, maddened salarians become hostile and force you to kill themLeave them locked: The salarians stay confined and die when the nuclear device detonates | |
| Lower Detention Cells (Ganto Imness)In the lower detention cell block | Release Ganto: Ganto Imness is freed to flee toward the perimeter (+2 Paragon)Leave him imprisoned: Ganto remains locked inside his cell and perishes in the nuclear explosion | Release Ganto |
| Rana ThanoptisAt the desk in the private lab ante-chamber | Spare Her: Rana runs away safely, reappearing in Mass Effect 2 on Korlus before succumbing to indoctrination and assassinating Asari officials in Mass Effect 3Execute Her: Kill Rana on the spot (+9 Renegade), permanently removing her from future titles | |
| The Virmire DilemmaDuring extraction after arming the nuclear weapon | Go to the AA Tower: Saves the squadmate stationed with Kirrahe's unit along with surviving salarians, permanently leaving the squadmate at the bomb site to die in the nuclear explosionGo to the Bomb Site: Defends the detonation zone and saves the squadmate guarding the bomb, permanently leaving the squadmate at the AA tower to die in the nuclear blastWhichever companion is abandoned permanently loses all equipped gear unless unequipped beforehand |
Key fights
5| Fight | Watch for | Weaknesses and resistances | Rewards |
|---|---|---|---|
| Indoctrinated SalariansIndoctrinated Salarians | Assault riflesTactics: Walk straight into fire lanes; dispatch quickly with basic firearms or AoE crowd control. | ||
| Geth ForcesGeth Troopers, Rocket Troopers, Shock Troopers, Destroyers, Juggernauts | Destroyers and Juggernauts aggressively charge into close-quarters shotgun range.Tactics: Use Overload on shields, Sabotage to overheat weapons, and Damping to suppress abilities. Neutralize charging Destroyers immediately with Lift or Singularity. | ||
| Krogan Warriors & Dr. DroyasKrogan Warriors, Dr. Droyas, Asari assistant | Heavy armor, rapid health regeneration (Immunity), aggressive charges, and Dr. Droyas's close-range shotgun attacks and biotic abilities.Tactics: Apply Warp to cancel health regeneration and damage resistance; halt charges with Lift, Stasis, or Singularity. | ||
| Cloning Lab HusksHusks | Released from stasis pods; charge directly to emit point-blank electrical AoE bursts.Tactics: Keep distance; eliminate with shotguns, throw biotics, or detonate them using tech abilities before they close in. | ||
| Saren ArteriusSaren Arterius | Motorized glider bombardment with high-impact rocket/energy projectiles, rapid shield regeneration, disruptive biotic throws, and dampers.Tactics: Break line-of-sight behind heavy concrete bulkheads to avoid volleys. Strip shields with Overload or Energy Drain, cancel armor resistance with Warp, and overheat weapons with Sabotage. Stun-lock using targeted heavy fire or physics biotics (Lift/Singularity) catching flight paths. | Saren retreats at approximately 25–50% health; grants massive mission XP, substantial credits, and high-tier equipment drops. |
Shops and people
| Shops and people | Sells |
|---|---|
| Commander Rentola Not yet confirmed | Salarian quartermaster at the STG camp offering basic weapons, armors, mods, and three distinct manufacturer armory licenses |
Virmire
- Shepard and the Normandy crew are dispatched to Virmire to assist an undercover Salarian Special Tasks Group unit pinned down by Geth forces. You discover Saren's base of operations, which houses a cloning facility to breed an army of Krogan cured of the genophage. You must assault the base, destroy the breeding facility, and make critical choices regarding the fate of squadmates.
Enemies
| Enemies | Weak to | Steal / drop | |
|---|---|---|---|
| Geth Colossus | Heavily armored quadruped walker that fires a devastating charged energy blast and can deploy repair drones | ||
| Geth Prime | Elite, heavily shielded heavy infantry unit armed with a pulse rifle and assault drones | ||
| Krogan Battlemaster | Extremely durable melee rusher that triggers Immunity and regenerates rapidly unless countered | ||
| Geth Hopper | Agile sniper that clings to walls and scrambles Shepard's tactical radar | ||
| Saren Arterius | Fought on a hovering glider platform near the facility's AA tower or bomb site | ||
| Geth Armature | Quadrupedal combat walker that can knock the Mako off course with charged shots. | ||
| Geth Rocket Trooper | Inflicts severe shield damage from long range; prioritize them before advancing on foot. | ||
| Geth Sniper | Uses laser sights to target squad members for high-damage shield-piercing shots. | ||
| Geth Drone | Flying support units that patrol gate choke points. |
Tips
- •High Charm or Intimidate ranks, or completing Wrex's family armor assignment beforehand, are required to stand down Wrex during the confrontation on the beach without resorting to killing him.
- •Disable the anti-aircraft guns as early as possible inside the facility to give the Normandy safe extraction clearance.
- •You can weaken heavy geth units like Colossi and Armatures with the Mako cannon, then exit the vehicle to score the killing blow on foot for bonus experience points.
- •Look for manual override switches inside each gatehouse structure to open the barrier gates blocking the Mako's forward route.
- •Use the Mako's jump thrusters to avoid incoming slow-moving plasma balls fired by Geth Armatures and Colossi.
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The full walkthrough text
Saren's breeding and research facility on Virmire serves as the site of a critical STG assault, the revelation of Sovereign's true nature, and a tragic squadmate sacrifice.
1. Camp Preparations and Infiltration Choice
Before setting out from the Salarian Camp, browse goods with Commander Rentola and use Easy Decryption on the Communications Relay and Medical Station in the tents. Talk to Captain Kirrahe to assign either Ashley Williams or Kaidan Alenko to lead his flanking unit, which temporarily pulls that squadmate from your party. Proceed to the facility via either the front bridge or the lower beach ramp; if you choose the drainage sewer route, you will need Easy Decryption to open the door, looting locked storage lockers and wetware kits along the way.
Tip: Stripping Ashley and Kaidan of high-end equipment ahead of time guarantees you will not forfeit rare items later.
2. Breaching Base Entry and Maintenance
Infiltrate the Base Entry and eliminate the Geth Forces guarding the security consoles and the adjacent Warehouse and maintenance bays. Interact with the Security Alarms Console and choose to disable alarms to pull geth forces away from the STG unit, earning +8 Paragon points and aiding Kirrahe's survival, rather than sounding the alarm for +2 Renegade points. Keep an eye out for charging Destroyers and Juggernauts by using biotics like Lift or tech powers like Sabotage and Overload to strip their defenses.
Tip: Suspend charging Geth Destroyers with Lift or Singularity before they close in with shotguns.
3. Exploring Detention Cells
Head into the Detention Level to inspect the holding units holding captive salarians. Opening the Upper Detention Cells drives the indoctrinated salarians into a frenzy, forcing you to kill them in self-defense, while leaving them shut keeps them trapped for the eventual bomb blast. Below in the Lower Detention Cells, you can unlock the cell holding Lieutenant Ganto Imness so he can sprint for the perimeter (+2 Paragon), or abandon him inside.
Tip: Indoctrinated salarians possess no shields or cover tactics, so cut them down fast with basic assault rifle fire.
4. Cleansing the Cloning Labs
Advance through the Genophage & Cloning Laboratories, gathering the Upgrade Kit and Wetware Kit located near the elevator as well as the Medical Station on the opposite wall using Easy Decryption. Stasis pods will crack open to release waves of Husks alongside Krogan Warriors, an Asari assistant, and Dr. Droyas. Neutralize the krogan's rapid health regeneration and Immunity by applying Warp, and take down rushing husks with shotguns or physics abilities before their electrical bursts detonate.
Tip: Target Dr. Droyas and krogan units with Warp to shut off their health regeneration and damage resistance.
5. Interrogating Rana and Saren's Office
Enter the private lab ante-chamber to discover the asari neurospecialist Rana Thanoptis sitting at her desk, alongside a Secure Weapon Locker requiring Average Decryption. Choose whether to let her escape unharmed or execute her on the spot for +9 Renegade. Move into Saren's Private Office to locate the Prothean Beacon, which initiates a dialogue with the Reaper Sovereign through the holographic terminal.
Tip: Sparing Rana allows her to flee unharmed, while executing her removes her from subsequent games entirely.
6. The Gantry Push and Bomb Deployment
Ride up to the upper exterior catwalks and the AA defense platform, looting weapon lockers and technician crates scattered across the gantry. The assault team lands to position the nuclear device in the trench while you fight through persistent geth resistance. When both the bomb site and the AA tower come under simultaneous assault, you are forced to make your final extraction choice: push toward the AA Tower to extract Kirrahe's squad, or return to the Bomb Site to defend the device.
Tip: Pick up all technician crates and weapon lockers along the catwalk before committing to the elevator.
7. Duel with Saren
Head toward your selected rescue zone to face Saren Arterius as he attacks from a motorized hover glider. Break line-of-sight behind concrete bulkheads to avoid his rocket volleys and biotic throws, while countering his rapid shield recovery with Overload, weapon heat with Sabotage, and armor with Warp. Maintain heavy fire and physics biotics to stun-lock him until he flees at 25–50% health, allowing the Normandy to extract your surviving squad before the nuke detonates.
Tip: Cast Lift or Singularity directly along Saren's flight trajectory to knock him out of his glider bombardment.
The short version
What matters
- Disable the security console alarms in Base Entry to rescue Captain Kirrahe and earn +8 Paragon.
- Strip equipment off both Ashley and Kaidan early so their gear is not deleted upon their sacrifice.
- Release Lieutenant Ganto Imness from the lower detention block for a Paragon boost.
Common mistakes
- Activating the Prothean Beacon before thoroughly clearing and looting the lower labs will lock you out forever.
- Sounding the alarms at the base security console sends hostile reinforcements into Kirrahe's unit and risks his life.
- Leaving your final Citadel assignments untouched before Virmire will make them permanently inaccessible if it is your final plot world.
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