Also decided to clean the backlog a bit, and played and finished Rainbow Six: Vegas 2. The early acts are fine, a bit bland visually and quite repetitive, but nothing too bad. The final two or three acts are terrible. Quantities of enemies ramp up and environments become too open, dodgy checkpoint placement only ups the level of frustration. They make things worse in the sixth act by sending you in completely alone, eliminating what was by far the most interesting part of the game. The seventh, and final, act is somewhat better in that you have a team again, but they decide to end it with a bloody boss fight.
Sounds pretty terrible right? Gets worse. Music is poor and often annoying, atmosphere is basically absent and the story is completely uninteresting and makes little sense.
I'm assuming the game shines in multiplayer, given all the high reviews it got. But going by just the single-player mode, 3/10.