Mass Effect 3
Mass Effect 3

Missions & Story Progression — Mass Effect 3 Guide

Navigate Mass Effect 3's story. Understand Priority missions, side quests, and time-sensitive assignments for optimal progression and impactful choices.

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Missions & Story Progression

Mass Effect 3's narrative unfolds through a series of main story missions, often referred to as 'Priority' missions, and numerous side quests. Completing these missions is essential for advancing the plot, recruiting allies, and ultimately, preparing Earth for the final confrontation. Understanding the order and importance of these missions will help you navigate the galaxy and make critical decisions that shape the outcome of the war.

The game's progression is largely linear, guided by the 'Priority' missions. These are the critical path objectives that move the overarching story forward. However, interspersed between these are a vast number of side missions and assments. While not always mandatory for story completion, these often provide crucial resources, unlock new squadmates, or influence your Galactic Readiness score, which is vital for the game's ending.

Some missions are time-sensitive and will expire if not completed before reaching certain story milestones. For example, missions related to the Citadel or specific planet assments might become unavailable after progressing too far into the main plot. It's advisable to tackle side content as it becomes available to avoid missing out on valuable war assets or character interactions.

Key story arcs involve rallying the various galactic races to the Reaper war effort. This often involves undertaking missions on their home worlds or significant locations, such as Priority: Tuchanka for the Krogan, Priority: Rannoch for the Quarians and Geth, and Priority: Thessia for the Asari. Each of these arcs presents unique challenges and moral dilemmas.

The game also features DLC-specific missions, such as those found in the Leviathan and Omega expansions, which can be integrated into the main story progression. These often offer unique lore, powerful gear, and significant war assets.

General Mission Flow:

  1. Prologue: Earth: The game begins with an attack on Earth, setting the stage for the Reaper invasion.
  2. Priority Missions: These are the core story missions that drive the narrative forward, often involving Shepard traveling to different planets to secure alliances or gather resources.
  3. Side Missions & Assments: These range from rescuing stranded civilians to investigating anomalies. They often unlock new war assets and can influence character relationships.
  4. Squadmate Loyalty Missions: Completing these missions for your companions deepens their loyalty, unlocks their ultimate abilities, and can have significant story implications.
  5. DLC Missions: These can be integrated into the main story or played as standalone arcs.

Pay attention to dialogue and mission briefings, as they often contain clues about potential consequences or upcoming challenges. The choices you make throughout these missions will have a lasting impact on the galaxy and its inhabitants.