Warning this is a glitched achievement
Welcome, to everyone this achievement is glitched it didn't pop for me after spending more than one hour in that mode, I'm still trying to figure out what the heck is going on, i will update once i found something.
Update 1: I used my friend account to try and pop this achievement and i noticed something the achievement popped immediately after after i got the attack one objective medal, i backed to my main tag and i got the clear 10 objectives medal but nothing popped so that means this achievement is somehow tied to the first medal and unless there is a way to reset your online rewards I think I'm screwed up on this piece of shit game.
Update 2: Some friends claim that they got it after like two minutes from playing that mode, remembered when i played that game mode for the first time i was lagging bad so that might be the reason it didn't pop.
Update 3: I got the achievement for playing this mode for 2 hours but still nothing this is really annoying 😢.
Update 4: After some searching i found that so many online achievements can be glitched without any known reasons so its looks like a matter of luck.
Please guys any ideas or suggestions are more than welcomed 👍 .
"This must be flagged as partly discontinued unless we find a solution"