Not got ahievement called "The Gully" for completing a large arena. I have achievement "Big...

Hello, first it's a pleasure to be able to help you today.

My name is welcome to the community.

Hello Shay, in cases like this of unlocking the achievement, try uninstalling the game and following the procedures below to see if it unlocks the achievement.

The first is a clear cache

1. Go to the Xbox press and hold the XBOX power button on the console for 10 seconds until it turns off

2. Wait 10 seconds until it turns off

3. Wait 1 minute with it off

4. Turn it back on

Xbox One reset keeping Games:

Press the Xbox button to open the panel.

Select system > Settings > System > Console Information

Select Reset console.

Restore and maintain my games and apps.

Rest assured, you won't miss games or saves

Note: You need to know the email and passwords of your accounts when performing this reset.

If it doesn't work, it's a bug in the game and you'll have to wait for a correction update.

I still need the Gully achievement. Completed the other two arena achievements with a level 69 Siren. If you're still interested then message me, thanks.

Just finished the Gully achievement, so I'm done with all the arena matches.

I like Treyarch's general map designs... large open maps... go anywhere you want... in MW3, the maps feel big, but you are channeled into very narrow paths and gullies... easy to camp...

could it be in regards to ahievements you have unlocked?