Xbox 360 acheivments unlocked randomly after playing a pub match in halo 3

I was playing a match of lone wolves in halo 3 and after 3 good matches I got the achievment notification saying 1000+ for 1000+G. I want to say this now, I'm a achievment hunter not a scumbag hacker to lazy to play a game. I've heard of mw2 lobbys that
unlock all the achievments for that game but I've never heard of anything like this. I don't want to get banned because someone elses **** or a glitch on xbox part. I've put over 450$ into this account so the last thing I'm gonna do is mod my gamerscore just
so I can get banned and branded a cheater. I called xbl support and they told to make this post because they can't do anything about it.

:)

 

This is What Xbox One's Achievements Look Like

i have never understood why in match games they dont do it like an acheivment screen when they give the stats of the round.

say your in killer instint and you unlock after that match/round when it does the win screen it shows you what acheivments it unlocks..

as far as live play or bigger world games the acheivment thing never bothered me.. im not a fan of that billiard green tho i do like the cup.. it seems very out of place but thats proably because of being use to how the 360 looks. the white on the 360 looks good but feels outdated or very bland.

 

Halo acheivments not unlocking

so was playing Halo 4 in the Master Chief collection. Went under the bridge and accessed terminal and no acheivement unlocked. Completed first mission and no acheivement unlocked. Went to career and picked the first achievement and picked the option to take
me to the point where I can get the acheivment tried again didn't unlock again. Finished mission again and no achievment. Normal game mode. Did unlock killed 100 grunts so I know that some achievments are working. Have completed 8 total Campaign missions
but didn't unlock any of those acheivments.

 

Hey there The Narfmeister,

We don't have any control over Enforcement action, but we do recommend that you stay away from any sort of modded lobbies.

Here is a bit more information from the Enforcement teams website.

"A Gamerscore correction occurs on a player’s Xbox Live account when they gain achievements through the use of external tools and avoiding gameplay. Xbox Live is committed to keeping the service free of this type of behavior as it violates the
Microsoft Services Agreement and
Code of Conduct. When abnormal achievement or Gamerscore activity is found, Xbox Live modifies the Gamerscore of players who meet specific criteria"

That's all the information we have on the subject, so as long as you're abiding by the Microsoft Services Agreement and Code of Conduct you'll have nothing to worry about.

Hope that helps!

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