Just completed ME1 and I’ve completed every achievement yet the only 2 that haven’t popped which I believe should have are completionist and archivist. Game is finished on insanity and I’ve received that achievement but still not the complete the majority of the game which surely would pop first? Lol . Pretty sure I’ve got 100% of all codex entries too so again unsure why this hasn’t popped. Any recommendations?
Archivist actually is about a set of codex entry most of which can be found at diverse points in game. Except for the Prothean one. If you didn't ask Anderson and Nilhus about them you are locked out of the codex entry which is necessary for this achievement (note that all codex entry needed can be found before leaving the citadel for the first time so I'd recommend trying to do a new playthrough and make sure you talk to everyone and ask all the questions before leaving. Then your achievement should pop up).
As for the completionist... Did you do any of the side quests ? There are plenty all around the citadel and a lot are found after scanning planets and landing on the ones available (hope you enjoy the Mako though...). The thing is there are a lot of quests in the game (though I'd recommend doing them even if it's just for the purpose of dialogues on the later games). I remember reading somewhere that you need to have done a certain number of quests in total for the achievement to pop up so... Not sure if it would help or not.
