Did the achievement glitch on your account?
Did you start out on SuperSoldier Difficulty?
Did the Veteran 3/7 achievement unlock?
Did you access the tutorial from a new game or through the menu?
Prior to campaign completion, did you replay missions through mission select?
If it didn't unlock initially, how did you finally get it to pop?
I STILL HAVEN'T UNLOCKED IT
Did you press the X button to skip cutscenes either at the end of a chapter or during a mission briefing?
NO...WATCHED THEM ALL
BUT ODD THING IS THAT IN THE MENU...IN THE VIDEOS AND MUSIC SECTION...ALL THE VIDEOS ARE UNLOCKED AND WATCHABLE FROM LVLS 1-6...7 AND THE ENDING ARE NOT THERE...AS IF I NEVER PLAYED THEM...IM WONDERING IF THAT HAS SOMETHING TO DO WITH THE SS GLITCH....AND MAYBE IF I START OFF AT 7 IF IT WILL FINALLY UNLOCK..