I will post back thoughts and snippets as I play - just got back from work and played for half-hour or so before dinner.
1) Plays...Ok. Vehicles are responsive and easy to drive, but not seen too much of this side of things yet. The shooting aspects are just generic FPS shooting so far. Competent but utterly unremarkable and not notably meaty or satisfying. Bad guys leap around and move in a fairly engaging way.
2) Looks...mixed. Everything from a distance looks pretty great - lighting is nice and everything looks like a slightly washed out and slightly more realistic Borderlands. Model textures for guns and characters are also pretty tight. On the negative side, landscape and level textures look disturbingly PS2-like when you get close - real ugly. Some slightly odd texture pop-in and screen tearing glitches which will probably be fixed out with driver updates.
3)Sounds...fine I guess. Voice acting is decent, guns go boom, cars go vroom. *shrug*
3) Technically...works fine so far. No crashes or major glitches yet. SLI support doesn't seem to be working, even with the latest NVIDIA beta drivers and the screen tearing seemed worse with it on, so I have switched it off for now. Weird not having any graphical settings other than AA, Resolution and "GPU Transcoding" Everything else is supposed to be done automatically under the new ID5 tech - adjusting on the fly to keep things at 60fps. Meh - I would rather choose my own settings, but whatever. Runs fine on my PC, but I would expect it to with 2500k, 8Gb and GTX570(x2)
Will post back more thoughts later - lemme know if you have any specific questions.