Glad I waited for the Gothy version now, as the standard game is very short but helps having all the expansions.
But and it's got a few Butt's.
It is an Oblivion Mod, nothing more nothing less. So it suffers from the Oblivion issues, e.g. lack of combat, mash the attack button till it's dead. So unless you play it on very hard it's not hard to play at all.
So to keep the console market happy they added VATs a auto aim feature, as you can't Aim in the game its all pure luck. So if you want a FPS game this isn't it, look to the Stalker or simmilar games for that.
As for Vista issues yeah its suffers but running in compatablity mode helps, as atleast then when it does crash it gives and error window to kill the game from, if not you have to ctrl alt del then right click the icon on the desktop menu to be able kill it.
So nice Oblivion mod but thats it