From the preview by Patrick Joynt:
"Our fears at the moment have very little to do with the technical aspects of the game: in its gunplay and open world technology, Far Cry 2 is very impressive. But we are concerned that it may be little more than an exceptionally large sandbox, making it difficult to make each area within it stand out as the play time clock goes up and up. We're also curious how the designers will prevent us from simply jetting to the last 'boss' area, gunning him down, and calling it a day: unlike Crackdown, we won't be gaining any super powers as we go. Those concerns noted, we're still impressed as hell with the game's visuals and the flow and feel of its combat; we're definitely excited for our first trip to Africa."