Best first-person shooter on XBOX
BLACK is in my opinion the best 1st-person shooter on XBOX 'cause it has the story twist and gameplay mechanic that only Criterion game team can do. The story starts with the investigation of a prisoner called... I forgot the hero name, anyway...he is given the chance to clear his name by cooperating with the Government by doing a very classified job for eradicating a terrorist group residing in Russia.
The game takes place in a city, a cemetery, the tunnel and then the Gulag where it all ended. The environment is hard to clear out most enemies you encounter but it will be your advantage once you have thought something for taking out these guys inside the building where you can sneaking out taking them one by one.