Monaco's mischievous marauders.
Monaco is great. I still haven't had a chance to play it as a co-op game which is unfortunate. The game looks great, the greyscale blueprints compared with the coloured world provides a great contrast for you to know what's in your line of sight, as well as where various items and security systems are.
Music is also rather good, Austin Wintory the composer for Journey has made more wonderful music. It does a lot to pace your own mood from sneaking around in vents to the mayhem that ensues after you inevitably set off an alarm.
I really love how all of the classes have their own distinct advantage to the point that the all feel overpowered in some way. I found the locksmith to be my least favourite, going through locks quickly is decent because it means you don't get stuck behind doors and also makes for faster runs through levels but I just didn't find it as useful.