There is a rash of movies on different movie streaming service involving American/European spec ops team and nazi secret bases and some aren't that good.
What sets this movie apart is the pacing and mood. It doesn't dwell too much on character development so they tend to one-dimensional except for the Tunneler and the German soldier who didn't give a caricature performance of a nazi stereotype. Clues and plot pieces are dropped at the right times to make up for a lack of action. For example the insertion team discovered the medical ward where the patients were cared.
Pros - Storytelling, acting, pace, settings, mood
Cons - Nazi stereotypes, character development, movie ending