Guides & Walkthroughs New Guides Popular RPG Action Strategy Adventure YouTube Guides Mobile App
Table of Contents
Download Game Guide PDF, ePUB & iBooks

Free iOS App
Mass Effect 3 Guide

Mass Effect 3 Guide

Take back the Earth Mass Effect 2 Guide contains complete walkthrough to all quests, maps, system requirements and achievements list. Best tips for combat, weapons, armors, assets, endings and exploration.

Last update: Sunday, October 30, 2022

This game guide to Mass Effect 3 is a complex and complete compendium of knowledge that will help you successfully complete this space adventure and discover 100% of the game's content. Our guide starts off with a beginner's tips section for casual players who begin their experience with the series. You can also find out some details about system requirements of ME3 and how long it takes to complete the game.

Mass Effect 3: Guide contents

The first large chapter of our guide is a detailed walkthrough of the Mass Effect 3 storyline. In our guide we mainly cover the quests of the main storyline - you will find out how to complete objectives and make progress, how to win important battles, how to deal with bosses and what important choices Shepard has to make. The main storyline is supplemented by pages on preparations for the grand finale and the available game endings. Of course, our guide also includes descriptions of all side quests, which were divided into several different categories (including quests at the Citadel, minor quests and N7 missions).

The second major chapter of this guide is the world atlas, which was designed to help you complete the game in 100% and find all secrets and collectibles. The atlas opens with a chapter about war resources - you will learn how to acquire and reinforce them. In the items and equipment chapter you will learn how to obtain new weapons and upgrades for them, how to equip Shepard with new armor or where to find stores in the game world. A larger chapter of the world atlas is also dedicated to the exploration of the galaxy. It contains, among others, information on where to look for resources and artifacts, and how to explore the game world. The maps of the Citadel and Normandy are of high quality and they mark important locations, passages and NPCs.

The last major chapter of the guide focuses on in-game romances. You will learn who you can romance with depending on whether Shepard is a male or a female character. We have prepared a step by step guide for each romance. This will allow you to determine when it's appropriate to become intimate with a specific character, how to develop a romance, and how to possibly end up sleeping with and/or becoming permanently involved in a close relationship with a particular NPC. We have also prepared some hints in case you have failed trying to romance a specific character.

Mass Effect 3: Beginner's Tips

In this section we have prepared some beginner's tips for people who are begining their journey with Mass Effect 3 campaign for the very first time. You can find more extensive hints on a separate Getting Started Tips page in our guide.

  1. It would be best to continue the campaign from ME2. You can do this by importing a saved game from Mass Effect 2. This will allow you to keep all of your previous choices, such as how Shepard acted at important moments, who died, or with whom a romance was started.
  2. Regularly talk with your companions on Normandy. Return to them after each major mission you complete to check for new scenes or dialogue options. This will allow you to strengthen relationships and potentially start a romance.
  3. Send a diverse team on missions. This means having, for example, a soldier, a biotic and a technology specialist. This will allow you to be ready for different types of threats and attack enemies that are resistant to certain types of strikes more effectively.
  4. Watch out for the Reapers on the galaxy map. They may start hunting Normandy after their vigilance bar fills up. In order not to fail the campaign, you must immediately throw yourself into flight in such a situation.
  5. Save the game as often as possible. This will allow you to protect yourself in case you make a bad decision in a scene or have failed to take advantage of a special behavior option. This is especially important if you want to achieve the best ending of the game.

Mass Effect 3: All main quests

Below is a list of major quests of the main storyline of ME3. Their descriptions can be found on the following pages of our guide. In addition to the quest descriptions on separate pages we discussed the preparations for the game's finale and the available game endings of the Mass Effect trilogy.

  1. Priority - Earth
  2. Priority - Mars
  3. Priority - The Citadel
  4. Priority - Palaven
  5. Priority - Sur'Kesh
  6. Attican Traverse - Krogan Team
  7. Attican Traverse - The Rachni
  8. Tuchanka - Turian Platoon
  9. Priority - Tuchanka
  10. Priority - The Citadel #2
  11. Priority - Perseus Veil
  12. Priority - Geth Dreadnought
  13. Rannoch - Admiral Koris
  14. Rannoch - Geth Fighter Squadrons
  15. Priority - Rannoch
  16. Priority - The Citadel #3
  17. Priority - Thessia
  18. Priority - Horizon
  19. Priority - Cerberus Headquarters
  20. Priority - Earth #2
  21. Endings
  22. Finale - how should I prepare?

Mass Effect 3: All side quests

The side quests have been divided into four main groups in Mass Effect 3 walkthrough:

  1. Citadel Missions - These are all missions that are completed entirely on the Citadel without leaving it.
  2. Missions outside of the Citadel - These are all missions that you complete in other corners of the galaxy (such as Grissom Academy).
  3. Mini-Tasks - These are short and uncomplicated missions that usually consist in finding and delivering an item (such as a protean artifact).
  4. N7 Tasks - These are all N7-type missions commissioned by Traynor the specialist that can be completed on the maps available in the co-op mode.

Lists of side missions available in each group can be found below.

Citadel Missions

  1. Citadel: Diana Allers
  2. Citadel: Doctor Chakwas
  3. Citadel: Doctor Michel
  4. Citadel: Khalisa al-Jilani
  5. Citadel: Aethyta
  6. Citadel: Hanar Diplomat
  7. Citadel: Aria T'Loak
  8. Aria: Blue Suns
  9. Aria: Blood Pack
  10. Aria: Eclipse
  11. Citadel: Ashley Williams
  12. Citadel: Kaidan Alenko
  13. Citadel: Miranda Lawson
  14. Citadel: Thane Krios
  15. Citadel: Kelly Chambers
  16. Citadel: Inspirational Stories
  17. Citadel: Wounded Batarian
  18. Citadel: Batarian Codes
  19. Citadel: Cerberus Retribution
  20. Citadel: Volus Ambassador
  21. Citadel: Medi-gel Sabotage

Missions outside the Citadel

  1. Grissom Academy: Investigation
  2. Grissom Academy: Emergency Evacuation
  3. Tuchanka: Bomb
  4. Mesana: Distress Signal
  5. Kallini: Ardat-Yakshi Monastery
  6. Arrae: Ex-Cerberus Scientists

Side missions

  1. Citadel: Alien Medi-Gel Formula
  2. Citadel: Barla Von
  3. Citadel: Improved Power Grid
  4. Citadel: Biotic Amp Interfaces
  5. Shrike Abyssal: Prothean Obelisk
  6. Benning: Evidence
  7. Ismar Frontier: Prototype Components
  8. Apien Crest: Banner of the First Regiment
  9. Kite's Nest: Pillars of Strength
  10. Normandy SR-2: EDI
  11. Normandy SR-2: Lieutenant Cortez
  12. Irune: Book of Plenix
  13. Citadel: Heating Unit Stabilizers
  14. Citadel: GX12 Thermal Pipe
  15. Citadel: Krogan Dying Message
  16. Citadel: Cerberus Automated Turret Schematics
  17. Citadel: Cerberus Ciphers
  18. Citadel: Reaper Code Fragments
  19. Hades Nexus: Prothean Sphere
  20. Dekuuna: Code of the Ancients
  21. Nimbus Cluster: Library of Asha
  22. Silean Nebula: Rings of Alune
  23. Citadel: Chemical Treatment
  24. Citadel: Cerberus Turian Poison
  25. Athena Nebula: Hesperia-Period Statue
  26. Citadel: Kakliosaur Fossil
  27. Citadel: Target Jamming Technology
  28. Hades Nexus: Obelisk of Karza
  29. Valhallan Threshold: Prothean Data Drives
  30. Citadel: Medical Supplies
  31. Citadel: Asari Widow
  32. Dekuuna: Elcor Extraction

N7 Missions

  1. Cerberus Labs
  2. Cerberus Attack
  3. Cerberus Abductions
  4. Cerberus Fighter Base
  5. Fuel Reactors
  6. Communication Hub

Mass Effect 3: Romances

Romances are an important feature of ME3, and as a result we've prepared a detailed section about them in this guide. You'll learn how romances work and who you can start a romance with, as well as who you can sleep with or with whom you may get into a closer relationship.

List of possible romances - Shepard (male):

  1. Ashley Williams (only if she is still alive and if she doesn't die during the new campaign; it doeasn't matter if you romanced her in the first part of the series);
  2. Diana Allers (only if you have invited her aboard the Normandy);
  3. Jack (only if she's still alive; romance has to be started in the second part of the series in order to continue it in ME3);
  4. Kaidan Alenko (only if he's still alive and he was not killed during the course of a new campaign; homosexual relationship);
  5. Kelly Chambers (only if she is still alive and if she does not die during the new campaign; it is required to start a romance with her in the second part of the series);
  6. Liara T'Soni (only if she is still alive; whether you romanced her in the first part of the series plays no role);
  7. Miranda Lawson (only if she is still alive and if she does not die during the new campaign; it is required to start a romance with her in the second part of the series);
  8. Steven Cortez (homosexual relationship);
  9. Tali'Zorah (only if she is still alive and if she does not die during the new campaign; it is required to start a romance with her in the second part of the series).

List of possible romances - Shepard (female):

  1. Diana Allers (only if you have invited her aboard the Normandy; homosexual relationship);
  2. Garrus Vakarian (only if he is still alive and if he does not die during the new campaign; it is required to start a romance with him in the second part of the series);
  3. Kaidan Alenko (only if he is still alive and he was not killed during the new campaign);
  4. Kelly Chambers (only if she is still alive and she was not killed during the new campaign; required to start romance with her in the second part of the series; homosexual relationship);
  5. Liara T'Soni (only if she is still alive; whether you romanced her in the first part of the series plays no role; homosexual relationship);
  6. Samantha Traynor (homosexual relationship).

Mass Effect 3: War Assets

Unlocking and strengthening war assets is a very important part of the Mass Effect 3, as this is directly related to the strength of the allied fleet. We have covered this topic in detail in the War Assets chapter of our guide.

  1. Basic information
  2. Possible conflicts of interests
  3. Alien
  4. Alliance
  5. Asari
  6. Crucible
  7. Ex-Cerberus
  8. Krogan
  9. Geth
  10. Salarian
  11. Turian
  12. Quarian

Mass Effect 3: Weapons and unique items - Listings

Our world atlas for ME3 includes various weapons, armor, unique items, secrets, and codex entries that can be obtained as you make progress in the game. By using the information in our guide you will be able to get 100% of the available collectibles and treasures.

  1. Weapons - list of all
  2. Weapons - basic information
  3. Weapon modifications - information
  4. Weapon modifications - list of all
  5. Armors
  6. Unique items
  7. Shops
  8. Codex entries

Mass Effect 3: World Atlas and Galaxy Map

In our Mass Effect 3 game guide, you will find valuable information that may help you in exploration of the game world. We've also prepared high-quality maps of the game's two main locations, which you will return to many times throughout the campaign.

  1. Basic information
  2. Galaxy map
  3. Citadel - maps
  4. Normandy - maps
  5. Materials, artifacts, resources - list
  6. Side Missions - Mars
  7. Side Missions - Palaven
  8. Side Missions - Sur'Kesh
  9. Side Missions - Tuchanka, Citadel #2
  10. Side Missions - Geth Dreadnought
  11. Side Missions - Rannoch, Thessia

Mass Effect 3: PC System Requirements

  1. Processor: 1.8 GHz Intel Core 2 Duo or AMD equivalent
  2. Memory: 1 GB RAM for Windows XP / 2 GB RAM for Windows Vista and Windows 7
  3. Graphics card: 256 MB of memory (supporting Pixel Shader 3.0)
  4. DirectX: 9.0c
  5. Storage space: 15 GB
  6. Operating system: Windows XP SP3 / Windows Vista SP1 / Windows 7

More information about the recommended system requirements for Mass Effect 3 can be found in a separate section of this guide - System Requirements.

Mass Effect 3: Game Length

Completing the main story in Mass Effect 3 should take you less than 25 hours, only if you focus on the main storyline and won't play on a high difficulty level. If you want to complete 100% of the main campaign, you will need to spend at least 40 hours with the game. The game can also be extended by large story DLCs.

For more information on how long it takes to complete the standard version of Mass Effect 3 and its add-ons, go to the Game Length page of our guide.

About Mass Effect 3 Guide

Author : Jacek "Stranger" Halas for

Translator : Jakub "Cilgan" Lasota, Jacek "Stanger" Halas, Bartlomiej Lopatka

Guide contains : 127 pages, 560 images.


Last update : October 11, 2022, visit Walkthrough

World Atlas

Last update : October 30, 2022, visit World Atlas


Last update : October 30, 2022, visit Romances

Use the comments below to submit your updates and corrections to this guide.

Hot Topics of Mass Effect 3 Guide

Mass Effect 3 Video Game

  • genre: RPG

  • developer: BioWare Corporation
  • publisher: Electronic Arts Inc.
  • platform: PC, XBOX360, PS3
  • rated: 18+

More About Mass Effect 3

The Biggest Leaks in Gaming History

The Biggest Leaks in Gaming History

Much ado about nothing – the "big" GTA 6 leak didn't reveal much in the end. The history of games knows much more serious incidents that have often cost the developers a lot of damage. Here are some of the most notable leaks in the history of gaming.

Twelve Most Memorable Deaths in Video Games

Twelve Most Memorable Deaths in Video Games

Death is almost stunningly prevalent in video games, but it's usually void of emotional charge. There have been "a few" games, though, which weren't afraid to do away with some really significant characters. Here's a list of the most memorable of them.

The Best Contemporary Video Game Series

The Best Contemporary Video Game Series

We love excellent games, but we love excellent series even more. Here is our editorial selection of the best (active) video game series.

Pandora’s boxes - how many times do we have to pay for a single game?

Pandora’s boxes - how many times do we have to pay for a single game?

Paid loot crates with randomized content in full-price titles are old news by now. The problem begins when we take a look at what’s in them and the companies’ willingness to exploit our penchant for gambling. Is this just another way to make us pay more?

See/Add Comments

You are not permitted to copy any image, text or info from this page.

This site is not associated with and/or endorsed by the Electronic Arts Inc. or BioWare Corporation. All logos and images are copyrighted by their respective owners.

Copyright © 2000 - 2022 GRY-Online S.A. for, unofficial game guides, walkthroughs, secrets, game tips, maps & strategies for top games.