***!!!PLEASE READ!!!****Using various resources I have compiled a full list of all available missions and assignments that will help you toward this achievement. Each one can be clicked on to view a full walkthrough of that mission. Below are a few important notes before we begin:
1) Some of the missions won't become available until after you complete certain story related missions first.
2) Do as many of the side missions as possible! If you don't you may be cutting it very close by the end of the game or not get your achievement at all.
3) DLC does count toward this achievement.*DOWNLOAD or
VIEW a spreadsheet I created which you can use to keep track of the missions you have completed. It is fully interactive (hyperlinks included). This is my first spreadsheet so please be nice and give me constructive feedback. :)
*I will continue to edit and update this solution as new information becomes available.
PLEASE CONTACT ME with comments and suggestions before downvoting.
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*QUICKEST SOLUTION:1) Complete the first set of Citadel assignments.
2a) If you want Liara as your squadmate then complete the "Find Liara T'Soni" mission.
2b) Otherwise complete "Feros: Geth Attack" and all of the Feros assignments.
3) Complete remaining Citadel assignments.
4a) Begin completing UNC assignments in the order you received them until the achievement pops.
4b) Feel free to continue the main missions as well but
STOP after the
Virmire: Assault mission before you travel to
Ilos as it is the point of no return and you will not be able to complete any secondary assignments after it.
Depending on which squadmates you choose, you will also be working on the following achievements:
The Soldier Ally achievement in Mass Effect worth 47 pointsComplete the majority of the game with the Alliance soldier squad member
The Sentinel Ally achievement in Mass Effect worth 53 pointsComplete the majority of the game with the Alliance sentinel squad member
The Krogan Ally achievement in Mass Effect worth 53 pointsComplete the majority of the game with the krogan squad member
The Turian Ally achievement in Mass Effect worth 49 pointsComplete the majority of the game with the turian squad member
The Quarian Ally achievement in Mass Effect worth 48 pointsComplete the majority of the game with the quarian squad member
The Asari Ally achievement in Mass Effect worth 61 pointsComplete the majority of the game with the asari squad member
***MISSIONS: (main quests)***-
Prologue: Find the Beacon-
Citadel: Expose Saren---
Garrus---
Wrex-
Find Liara T'Soni-
Feros: Geth Attack-
Noveria: Lorik Qui'n-
Noveria: Peak 15---
Reactor Repair---
Reconnect Landlines---
Contamination---
Rift Station---
Matriarch Benezia---
The Hot Labs-
Virmire: Assault-
Ilos: Find the Conduit-
Race Against Time-----------------------------------------------------------
***ASSIGNMENTS: (side quests)***Citadel: (info on citadel)-
Scan the Keepers-
Presidium Prophet-
Reporter's Request-
The Fan-
Rita's Sister-
Signal Tracking-
Jahleed's Fears-
Homecoming-
Asari Consort-
Xeltan's Complaint(You must complete a main mission before the following assignments become available.)-
The Fourth Estate-
Family Matter-
Old Friends-
Planting a Bug-
Schells the Gambler-
Negotiator's RequestUNC: (uncharted worlds)-
Missing Survey Team-
Rogue VI-
Hostage-
Major Kyle-
Distress Call-
Missing Marines-
Privateers-
Hostile Takeover-
Asari Writings-
Turian Insignias-
Valuable Minerals-
Locate Signs of Battle-
Dead Scientists-
Cerberus-
Colony of the Dead-
Prothean Data Discs-
Lost Freighter-
Espionage Probe-
Hades' Dogs-
Lost Module-
Geth Incursions-
ExoGeni Facility-
Derelict Freighter-
Listening Post Alpha-
Listening Post Theta-
Depot Sigma-23-
Asari Diplomacy-
Besieged Base-
The NegotiationFeros: (info on feros) *IMPORTANT: Complete all Feros assignments as soon as you arrive before heading to the sky bridge which takes you to ExoGeni Headquarters.-
Geth in the Tunnels-
Power Cells-
Varren Meat-
Water Restoration-
Data RecoveryNoveria: (info on noveria)-
Smuggling-
EspionageVirmire: (info on virmire)-
Wrex and the Genophage-
Assisting Kirrahe's Team-----------------------------------------------------------
***ALLIES:***-
Garrus: Find Dr. Saleon-
Wrex: Family Armor-
Tali and the Geth-----------------------------------------------------------
***DLC: (downloadable content)***BRING DOWN THE SKY:Asteroid X57: (info on asteroid x57)-
Bring Down the Sky-
Missing Engineers-
Avoid the Blasting CapsPINNACLE STATION:Pinnacle Station: (info on pinnacle station)-
Combat Missions-
Convoy-
Vidinos