I played through it today instead of studying for finals. Very strange how this must have been developed, because it is mostly new content (and a bit better too), at six hours, which is how long The New Order was, but at a third of the price.
Also curious is how it wasn't marketed as a remake of Return to Castle Wolfenstein, because that is exactly what it is. At least, it's the first third of that game, padded out to six hours, with later game stuff like supersoldiers thrown in anyway. You start by infiltrating Castle Wolfenstein, then you get captured, your buddy gets killed, and you make your escape. After a trip down cable cars, you make it to a village where a friend puts you on an underground railroad to find totally not Helga von Bulow and her documents. She finds you out and casts zombies on the place, but you follow her to some catacombs where she summons a monster that kills her and tries to kill you.
The main difference, aside from the obvious omissions after that, is that it's designed the same way The New Order was designed (except for cutscenes, which are rare). Shitty segmented hallway levels for consoles, along with the occasional big room where a bunch of bad guys patrol and their commanders call in reinforcements. It's padded out to six hours by a lot of repeated setpieces, like fending off an attack on a building or crappy but really easy stealth against supersoldiers. There are also plenty of scenes where a Nazi has you cornered and twirls his or her moustache for a few moments to show that Nazis are evil and all that...
Uber difficulty is slightly more challenging than in the previous game, but still pretty easy. Mostly I died because I didn't bother trying too hard or didn't play the way the game wanted me to. Other times are really hard to shoot through, but they're doable with some really stupid stealth exploits.
They've slightly improved the base game, but not by much. Just play Return to Castle Wolfenstein instead.