Mass Effect 3 Walkthrough
This is my favorite guide on the Citadel. Our Mass Effect 3 Walkthrough covers the entire spectrum of the single player story, multiplayer tips, and how to build a powerful army.
Citadel Missions
The Citadel acts as a town hub where you can pick up many side quests for extra cash, War Assets, and Reputation. some of these quests even link to past events from Mass Effect 1 and 2.
Aria
Aria from Omega can be found inside Purgatory. She wants you to unite the Blood Pack, Blue Suns, and Eclipse. If Zaeed survived Mass Effect 2 he might change this mission slightly. You can recruit these mercs in any order, with the Blood Pack being the fastest. Might as well start there.

Head down to the Commons and into the apartment area. Meet with Narl to gain some Reputation and an update to the Terminus Fleet War Asset. For Eclipse head to the Embassies and chat with Bailey. You can try to force him to release Sederis for Renegade points, but this will fail anyway. You'll need to head to the C-SEC office in the Commons and talk to the criminal directly. She's clearly crazy, but can released for Renegade points. For the Paragon option head down to the Docks: Holding Area and convince her second in command to take over Eclipse.

For the Blue Suns Vosque can be found in the Holding Area at Cargo Hold A. He will ask you to take care of Oraka in the Commons. Talk to the General yourself to hear his story. You can take the Renegade path and off him, or choose Paragon and find a new weapons source. Talk to Kannik over in the Market and he will agree to supply weapons in exchange for an artifact. The one he wants is in the Kite's Nest Cluster, Vular System, on the planet Vana. With Kannik's help you can convince Oraka to leave the Blue Suns alone.

With all three tasks complete the mercenary groups will help you in the war effort.
Hanar Diplomat

You'll get an e-mail about this while on the Normandy. Head to the Embassy and talk to Jondum Bau. If Kasumi survived Mass Effect 2 parts of this mission may be fairly different. Move over to the Spectre Terminal and enable Hanar Embassy Tracking. Now head to the Terminal in the Embassy Offices to get the first piece of evidence. There are two more pieces of evidence in the Holding Area, one at the Security Check Point and the other over in Bay E28.

Head back to the Embassy and talk to Bau to confront the Hanar. There will be a Renegade prompt to save Bau, but if you ignore it and let him die you will gain Hanar and Drell Forces (50 War Asset). Choose carefully.
Liara's Father
Inside the Commons you can speak to the bartender Aethyta. She will reveal her relation to Liara. You can either go the Renegade path and send her away. Alternately, you may talk to Liara at the nearby table and convince her to talk to her father. Doing so will update the War Asset Asari Fifth Fleet.
Volus Ambassador
On the Normandy you'll get mail from Victus after the Citadel Attack. It appears that the Turians are looking for an Ambassador named Korlack last seen on the Citadel. Head to the Spectre terminal and use the tracker to locate Korlack. Head over to the Embassy Office and talk to the guard to gain access to Korlack's office. Listen to all three messages on the terminal to find out about the mercenaries that have captured Korlack. If Zaeed survived Mass Effect 2 he will be among them. Head over to the desk on the other side of the room and listen on the head set. You'll be taken to the Commons where you will need to check two apartments. The first will always be the wrong one, so go to the second right after. You'll save the Volus, and possibly with the help of Zaeed. If Zaeed was loyal in Mass Effect 2 you'll be able to gain him as a War Asset down in the Docks. However, if he was disloyal he will perish during this mission.
Wounded Batarian

You'll gain this mission by walking around the Commons and listening in on a Turian talk about a wounded Batarian. Head down to the Holding Area and talk to the Nurse. You can choose to either kill the Batarian (Paragon) or leave him to suffer (Renegade).
Spectre and Artifact Delivery
People on the Citadel and Normandy are looking for various items. Just by walking by someone you may overhear a request to pick up an item. These fetch quests can be completed by scanning planets, searching area during missions, or sometimes buying them from your Spectre terminal.
| Reward | NPC | NPC Location | Requested Item | Item Location |
|---|---|---|---|---|
| Credits | Preacher | Docking: Holding Area\Cargo Hold: C | Pillars of Strength | Kite's Nest\Harsa\Khar'Shan |
| Credits | Diplomat | Citadel Embassies\Embassy Offices | Prothean Obelisk | Shrike Abyssal\Urla Rast\Talis Fia |
| War Asset | Dr. Ravin | Hospital\Patient Lounge | Alien Medi-Gel Formula | Sigurd's Cradle\Decoris\Sanctum |
| War Asset | Officer | Purgatory\Lower Bar | Banner of the First Regiment | Apien Crest\Castellus\Digeris |
| XP | Doctor | Hosptial\Examination Rooms | Advanced Biotic Implants | Ismar Frontier\Aquila\Metaponto |
| War Asset | Asari Scientist | Hospital\Lab Services | Biotic Amp Interfaces | Petra Nebula\Vetus\Grissom Acedemy |
| Quest Objective | Kannik | Commons\Market | Black Market Artifacts | Kite's Nest\Vular\Vana |
| Rep, XP | Dominic | Citadel Embassies\Embassy Offices | Information on Bilal Osoba | Spectre Requisitions |
| War Asset | Alison | Purgatory\VIP Entrance | Improved Power Grid | Krogan DMZ\Aralakh\Tuchanka |
| War Asset | Sellea | Commons\Courtyard | Heating Stabilizers | Spectre Requisitions |
| War Asset | Angry Accountant | Commons\Bank | Book of Plenix | Aethon Cluster\Aru\Irune |
| War Asset | C-SEC Officer | Commons\Courtyard | Automated Turret Schematic | Krogan DMZ\Aralakh\Tuchanka |
| War Asset | Soldier | Bay D24\Viewing Deck | Prothean Data Drives | Valhallan Threshold\Paz\Garvug |




