firehawk12 said:Completionist means doing pretty much most of the sidequests in the game.
The Ally achievements force you to use the same characters throughout the whole game and to do al lthe side quests.
The Ally achievements have a specific checklist of quests you need to have completed for each Ally. That's why some are harder than others. I used Ashley and Kaidan for the whole game, doing pretty much every sidequest I had and didn't get it.
Completionist felt like an accident when it happened. *shrug* Haven't heard of it being hard, though.