Glitch/bug Rise of the Tomb Raider chapter replay elite at Copper Mill

here is a bug/glitch that i ran into in copper mill during the replay elite mission. the first shielded guy that came out in the movie did not have a face guard/shield. i wonder if it has anything to do with the 'big head lara' card that i used. i defeated the other two shields and you see the unshield one just standing there like nothing happens. so i restarted for the last check point and careless and still thinking about the bug. guess what? i forgot i had the 'one life to live' card used. 20 minutes of work/play just down the drain. lol.