Achievement progress

I have lost all of my progress with killjoys and grenade kills! I was about 75% done with both, now it said that I have only completed 4%! How do I get my progress back! I’m trying to complete all of the achievements before halo 5 comes out!

This has happened to me with killjoys and legendary medals, someone help?!

From what I have read on other forum posts it seems like the only thing that people say matters is what is recorded on your service record here. I was doing the legend achievement grind and now see that none of my Halo 2 was saved even though in the game it is. So from what I know…and I’m super new so i could be wrong but if it isnt in your service record here youre just out of luck

someone correct me if im wrong

> 2548018717753399;3:
> From what I have read on other forum posts it seems like the only thing that people say matters is what is recorded on your service record here. I was doing the legend achievement grind and now see that none of my Halo 2 was saved even though in the game it is. So from what I know…and I’m super new so i could be wrong but if it isnt in your service record here youre just out of luck
>
> someone correct me if im wrong

It’s triggered in the achievement app and not ingame. That’s why people having like 1.200 grenade kills, but not the achievement for 500 grenade kills. So … your ingame count is pretty much useless.