HELP! Given Achievements By Cheater

So, I was playing Call Of Duty Black ops 2 on my Xbox One Slim when I joined a modded lobby. I was going to leave when the screen said “Give All Achievements”. I left as fast as possible, quit the game, looked at my Gamerscore, I was heart broken. I think
my Xbox Live Profile had 10215 Gamerscore before, now it is 10855 Gamerscore. I’ve spent almost a year collecting achievements and I don’t want to lose it all. I did not get the cheaters name because it was changing and I had to leave the game. I do not want
to get banned because of a cheater. I don’t know what achievements I was given and what to do. Any Help Would Be Fantastic!

P.S. This my first time creating a post.

P.S. I didn’t know what forum I should use.

:)

 

Gamer score reset?

The only way to really start over is by creating a new account. A gamerscore reset is only given if you have been found to have gained your achievements by cheating the system. Once a reset is given, you are labelled a cheater and can never re-earn any of
the achievements you previously had.

 

question about the cheat DLC pack on market place

if i buy the cheat DLC pack and use it, will it disable achievements? or can i still get them? i am assuming since i am paying for it, it will not disable achievements. does it work like the cheat mode in crackdown? in crackdown, when you use cheats you
can't get achievements but, when you go back and play without the cheats, you can get the achievements. i wanna be sure i won't disable or lock achievements by buying the cheats pack and using it.