I like the detailed eye color. Not often you see blended eye colors represented, even though they're super common. It's a nice attention to detail.
Speaking of attention to detail, his clothing looks the right kinda boring beige for a contemporary army uniform, but his collar is enormous and totally distinct. The German uniform had a big collar, kinda, except it's pressed flat to the shoulders in all the pictures I can find, and they're more green (but that could just be the lighting/cc/etc). That collar in the teaser is popped af.
He's also very well shaven for someone who's possibly been in a trench for weeks ![]()
Edit: My gut reaction to the overall clip is to be reminded of Wolfenstein. Battlefront: Wolfenstein would be awesome, somebody should make that game ![]()