Hunt Achievements erased!

So I started killing animals just to get the achievements, and I got the three of them, then the next day I couldn't sign in to my profile, so I erased the profile and download it again, this caused my achievements to change language to spanish, but not
only that, the small animals and flying animals achievements were locked again! So I thought as they weren't hard to do I'll do them again but they don't unlock!! Why???!!! I'm doomed I'll be the 48 of 50 achievements forever? Please someone tell me there
is a solution

:)

 

erased achievements

I finished a game, unlocked new titles and emblems, but when I backed out of that menu my game froze and now my profile has all the progress and unlocks from the last game I played. I have film of the match saved on my xbox and uploaded it as well; is there
any way I can get the progress and achievements re-unlocked?

 

Revisiting the Xbox 360. Need your opinion? (New account vs old account)

I'd get back your old account, just don't achievement hunt. Or, if you do achievement hunt, don't buy new games just for achievements!