The whole experience is quirky, following down paths of pseudo science in a world where it is fact.
I like the tile system and how every single room has a puzzle, most of which can be solved multiple different ways, yet with solving those puzzles bing entirely optional(killing all enemies in a room, though, NOT optional). There are a lot of good aspects to it, with the constant need to reevaluate your approach based on the artifacts obtained each run. There's a bit of a lack of depth to matters, IMO, that holds it back from greatness, but it's well worth the play.
It's not overcomplicated, like some FPSs tend to be. Storyline is decent, the changes to the setting from the Nazis winning WW2 are somehow less interesting than the things that change very ltte. Plus, you get to kill lots of Nazis.
