Mass Effect 3
68 Achievements
Priority Target
Discover a plot against you.
How to unlock the Priority Target achievement in Mass Effect 3 - Definitive Guide
Video below showing roughly how long the level is but be warned there are spoilers.
This is the first achievement you will unlock, as it is the first of the story related ones. To begin the story, you need to travel to the citadel and choose the location 'Personal Apartment' when prompted.
During the first mission, you will be attacked in a restaurant, while having dinner with Joker. After fighting your way through the level and being extracted, the achievement will unlock. The path you need to take is very linear, so you can't get lost.
Story related, cannot be missed.
Story related. If you want more info, continue reading. Otherwise, know that this will unlock through the natural progression of the story.
After you reach Anderson's apartment, check your messages again to see an email from Joker. Leave the apartment to meet him and Brooks. Once the shooting starts, make your way to Brooks. A cutscene will trigger and you'll find yourself in a new part of the Citadel trying to make your way to a car lot and escape. Again, you'll be fighting the same mercs all the way through. The end of the mission has you hold out for a minute against the mercs until Joker can pick you up. The trophy unlocks after you regain control of Shepard in the apartment.