Illium: Liara: The Observer


Quest Type

Optional Mission



Previous Mission

Illium: Liara: Systems Hacking

Next Mission



Experience Points

Illium: Liara: The Observer is an Optional Mission in Mass Effect 2. Illium: Liara: The Observer requests you to recover data fragments for Liara. Optional Missions are secondary quests in Mass Effect 2, that are not mandatory to progress the game's story, but provide context and flavor by meeting interesting NPCs of all kind of Races, granting additional experience, and letting the player visit extraordinary and unique planets. Not to be confused with Assignments, in Mass Effect 2 there are a few Optional Missions and most of them revolve around choices in the first game.


Illium: Liara: The Observer Walkthrough

After completing Illium: Liara: Systems Hacking, Liara T'Soni will tell you about an agent of the Shadow Broker known only as the Observer. She wants to identify and kill this agent in order to weaken the Broker. She needs you to hack 5 terminals, to obtain a fragment of text that would help her unmask the Observer. You learn that Nyxeris, Liara's assistant, has narrowed down the list of potential suspects to a Batarian, a Krogan, a Salarian, a Turian and a Vorcha.

After completing the hacking job on a terminal, you have the option to call Liara and tell her who you think the Observer really is. Or, you can continue on the hunt for evidence.

Data Points Location

Data Point 1
Next to the Asari and Volus discussing human colonies and business on the western side of the Trading Floor. The text reads:

“…trader tried to kill the Batarian. Claims it was because he hates slavers, but the men were more likely fighting over money. Watch for now…”

Data Point 2
Found near the counter in the Eternity bar. The text reads:

“Smuggler and assassin have refused to work with the Vorcha due to lack of trust. Odd to see scruples from the men at this point.”

Data Point 3

On the Trading Floor. At a digital information board, just right of the large hologram. The text reads:

“The Turian's asking too many questions. Observer recommends terminating him and framing assassin or Salarian contact.”

Data Point 4
At a kiosk near Serrice Technology. The text reads:

Turian contact working well with the trader. Observer has rescinded kill order against him, given difficulty in securing contact with the trader through other methods.”

Data Point 
Located just down the stairs from Liara's office. The text reads:

Vorcha trader has requested no further contact with the Salarian. Salarian is becoming more trouble than he is worth. Observer recommends a kill, but she may have a grudge.”


How to unlock Illium: Liara: The Observer


Enemies found on Illium: Liara: The Observer

  • N/A


Illium: Liara: The Observer Rewards

  • Experience Points
  • Credits.


Illium: Liara: The Observer Notes & Tips

  • Notes & tips go here
  • If the Lair Of The Shadow Broker conversation option is selected after starting this mission, then this Mission instantly completes without awarding credits or experience. Therefore, complete this mission before beginning the Shadow Broker DLC.


Assignments in Mass Effect
Arrival (Assignment)  ♦  Citadel: Crime in Progress  ♦  Citadel: Found Forged ID  ♦  Citadel: Krogan Sushi  ♦  Dossier: The Master Thief  ♦  Dossier: The Veteran  ♦  Illium: A Troublemaker  ♦  Illium: Blue Rose of Illium  ♦  Illium: Gianna Parasini  ♦  Illium: Indentured Service  ♦  Illium: Medical Scans  ♦  Illium: The Assassin: Salarian Family Data  ♦  Illium: The Justicar: Smuggling Evidence  ♦  Illium: The Justicar: Stolen Goods Found  ♦  Illium: The Prodigal: Lost Locket Found  ♦  N7: Abandoned Mine  ♦  N7: Abandoned Research Station  ♦  N7: Anomalous Weather Detected  ♦  N7: Archeological Dig Site  ♦  N7: Blood Pack Base  ♦  N7: Blood Pack Communications Relay  ♦  N7: Blue Suns Base  ♦  N7: Captured Mining Facility  ♦  N7: Eclipse Smuggling Depot  ♦  N7: Endangered Research Station  ♦  N7: Hahne-Kedar Facility  ♦  N7: Imminent Ship Crash  ♦  N7: Javelin Missiles Launched  ♦  N7: Lost Operative  ♦  N7: Mining The Canyon  ♦  N7: MSV Estevanico  ♦  N7: MSV Strontium Mule  ♦  N7: Quarian Crash Site  ♦  N7: Wrecked Merchant Freighter  ♦  Normandy Crash Site (Assignment)  ♦  Normandy Crash Site (Assignments)  ♦  Normandy: FBA Couplings  ♦  Normandy: Serrice Ice Brandy  ♦  Normandy: Special Ingredients  ♦  Omega: Archangel: Datapad Recovered  ♦  Omega: Batarian Bartender  ♦  Omega: Packages for Ish  ♦  Omega: Struggling Quarian  ♦  Omega: The Patriarch  ♦  Omega: The Professor: Missing Assistant  ♦  Overlord (Assignment)  ♦  Overlord: Atlas Station  ♦  Overlord: Prometheus Station  ♦  Overlord: Vulcan Station  ♦  Project Firewalker: Geth Activity  ♦  Project Firewalker: Prothean Site  ♦  Project Firewalker: Rosalie Lost  ♦  Project Firewalker: Survey Sites Located  ♦  Project Firewalker: Volcano Station  ♦  Tuchanka: Combustion Manifold  ♦  Tuchanka: Killing Pyjaks  ♦  Tuchanka: Old Blood: Missing Scout

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