I´ve found a solution for the problem with the Last Tiger Missions. For far as I know it works on PC.
1.- Disable Cloud Storage and close Origin. Search for Battlefield V save folder (located in My documents), and rename the folder "Battlefield V" with another name ( I just use Battlefield 5). And don´t forguet to disable Cloud Storage or the old data will still be there (dont be panic you dont loose your progress...)
2.- Complete the missions where the achievments was bugged (in my case in the first one when you need to complete without repairing).
3.- Go to your armory in the game and reclaim the Tiger Skin "The Last Tiguer".
4.- Quit game and rename to the original name the "Battlefiled V" folder you just changed name before and reactivate Cloud-Storage.
5.- Now skin should be in your inventory. Works for me.
Let me know if it works for you too.
