Bulk include:
- Pseudo obligation to be connected to Windows Live for backing
- The SecuROM protection as haitude 1) is useless, it does not stop pirate and 2) is inconsistent with numerous installed software
- Windows Live servers that are not working right now, impossibility activation
- Crashes at launch
- Graphical bugs in the game
- The enormous slowdowns in the game
And the list continues.
Clubic, Gameblog, CanardPC, and dozens of other pros sites report these problems and many others, and confirm for themselves.
As it is, the game is unplayable (literally) for many. If you do not have buy, wait until the first patches (and they do confirm correct problems) to do this.