Re: Unable to complete last tiger challenges

this should do the trick:

1. Please move the saved file from the Xbox to a USB stick,
2. Clear local and cloud saves for BFV. (This wont remove multi player data)
3. Start the game. You'll have to adjust contrast and play again the intro.
4. Now, play the War Story and complete the bugged challenge. It will show correctly achieved.
5. lose the game, and restore the game save files from the USB to the console.
6. Start the game, and you'll have your reward at the armory. 

hope this works for you, XP appreciated + accept it as solution if it works, thanks