Thanks Guys
Firstly
is keeping Buggy+/-. We can't take into account DLC when flagging the original game, because not everyone has access to the DLC even if it is free. So the buggy- stays. The fact that the achievement has and can pop earlier than what is suggested in the achievement description is enough to keep buggy+.
Second
The Unwavering achievement in Mass Effect 3 worth 128 pointsFinish all multiplayer maps on Gold or all single-player missions on Insanity. will get Buggy- , as a few people have indicated that the mission counter resets making this achievement difficult to obtain.
Finally the new Branch flag was added to most of the suggestions. Where there is two very different methods of obtaining a single achievement then the branch flag will show this. However in the case of completing the same action albeit on different difficulties then the branch flag does not apply.
Game Info Monkey. Hit enough buttons I'll get it right eventually.