The goatroped achievement (Halo CE on legendary under 3 hours) is not unlocking for me. I have searched this topic many times for solutions and tried almost everything I have seen. My lowest times are all solo, except Truth and Reconciliation, which was co-op. Total time is a little over 2:48. I have seen multiple people say that this achievement can use a mix of solo and co-op times. Additionally, when I go to Options and Career -> Career -> Stats -> Halo CE -> Campaign, it says my fastest clear time for legendary is 2:48:43 (which is correct, looking at my Halo Waypoint records). So it seems to be looking at both solo and co-op.
I have completed all missions on both solo and co-op (one “fix” I saw). I have attempted to restart the game several times, and have started and finished several missions after I should have unlocked the achievement (another “fix”). I have also tried waiting overnight (it should have unlocked yesterday) and still nothing (multiple restarts and levels started/completed today as well).
The only “fix” I have not tried is getting a lower time on truth and reconciliation solo so that my “solo times only” would be under 3 hours, but this A) shouldn’t be necessary from what I have read online/seen in the stats in the game, B) would be a significant effort (though doable), given that C) this may still not fix my problem.
First post so I apologize if this is not where this is supposed to go, thanks!