Just completed SP. Took me about 8 hours. Only way it could be done much quicker would be cheating your way through
Not tried the Co-Op or Deniable Ops mode yet but can guess they offer a fair amount of gameplay time as well.
Gfx are very nice & highly detailed in several places it looks utterly stunning & is one of the best looking PC games for a long time. The shaders, glass reflections, use of coloured lighting & detailed texture work all combine to make it look special & I would say its the best looking SC game ever made
Looks great & runs very well on a GTX260-216 + Q9450 with max gfx + x4AA. No slowdowns or stuttering.
Sometimes when the game switches between the ingame engine & the pre-rendered cutscene you get a tiny little microstutter jump but its hard to notice unless your looking for it! No in level loading that I could notice either & all loading is very fast anyway.
Music is epic & very movie like, sound FX are strong & loud
Ubisofts DRM is totally seamless & it also hosts the savegames so I swapped between my 2 PC's & it remembered exactly where I was. Did not have any issues whatsoever with the DRM & would say its something Ubisoft should stick with as they have implemented it very well here. Boycotting because of that alone is so juvenille & ludicrous when most PC gamers have a constant Internet connection anyway
they probably realise they actually may have to buy a game now to support PC gaming you know like they are supposed to since day 1
Only downsides I could find were:
1: Pre-rendered Bink FMV in places had a lot of compression artifcats they should have been rendered again for PC @ a higher resolution as they are obviously the same FMV as the console versions.
2: Wireless X360 gamepad needs a mod to work as the buttons are messed up due to Ubisoft using an older driver for the wirelesss gaming receiver. Easily fixed with a copy & past though
3: SP is pretty small as the levels are not that big so obviously the 2 times that we know about where Ubisoft scrapped the entire game & started again really hurt the level size as I am guessing the entire game as released took just over a year which shows in the level size & lack of things to do in them although most scenary is destructable & blows up real well its lacking all the ingame things you could do in all the other SC games & has really been dumbed down gameplay wise into more of a cinematic cross between: MGS & COD MW2 to please the console kiddies