Well, to be really honest, alot of things seem to be wierd there since you actually don't see some things at all, you don't even see shades of the trees or other meshes, In your case I'd actually try to redownload the game installer again and try if it works better since nothing can happen when doing this.
Thing is though that you're using Intel onboards graphics, and those aren't exactly the top notch. The last patch were meant to help so it would run on more systems using these, but it might not still be able to work on yours.
The tut here was mainly for computers that use nvidia and amd ati cards.
I'm not too fond when it comes to the intel drivers, or how old your system is for that fact. But if you know the manufacturer for your computer and the name for your graphic chipset you could probably google your way to some answers and see if there's new drivers for your computer, but in some cases it doesn't change much and maybe you'll still have the same problem, but ofcourse, might work.