Legendary Bug - Midnight

Just completed the game solo on Legendary and have the achievement to show for it, but the challenge for completing Midnight didn’t unlock for some reason, and as a result I didn’t get the MC armour set.

Anyone know how I can get this fixed? Bar doing the whole mission again? Under missions it even acknowledges that I’ve completed every mission on Legendary…

Check your commendations, it probably didn’t do it as the servers are having an issue with a lot of people at the moment.

It was actually the commendation I was referring to, rather than a “challenge”. Midnight remains unchecked, hopefully it sorts itself out when the server issues are rectified… Not too keen to jump right back into it the mission again.

It seems that commendations can only be earned when there is a connection to the server. My achievements have timestamps so clearly it’s not my problem… Bit of a cop out to force me to do the mission again, but whatever…