Great single player campaign, enjoyed the russian 50's scifi theme.
Its a pretty straightforward shooter, with a 1950's theme to it, abit like Bioshock in that respect.
Theres a great variety of weapons and time manipulation powers all upgradeable just like Wolfenstein.
The twist to this game is the frequent going back and forth between present day and the 1950's, i dont want to give the plot away but this has consequences at the end of the game storywise.
The time manipulation powers are pretty cool, you can age objects or de-age objects like stairways to help you along, you can also age enemies as well turning them into dust or mutated creatures.
The single player campaign took me approx 9 -10 hours to complete, which is quite long these days considering MW2 or bad company 2 are like 5hrs long.
Graphics are ok, not amazing or anything but was good enough for me, boss battles looked pretty cool.
Overall i recommend this game if your looking for a decent single player shooter, didnt play any multiplayer so i cant comment on that.
Oh and theres about three different endings so dont forget to continue the game after you completed it to choose the other two endings, you dont have to play the game all over again :)