Red Faction was an FPS that let you blow holes in walls. That was its 'thing'. But the destruction was severely limited and, no matter how hard you pummelled the walls with rockets, you were still funnelled down a linear path. But Red Faction: Guerilla is different.
For one, it's no longer an FPS - opting instead for a third-person viewpoint - but, more importantly, it's now set in an open world where absolutely everything you see can be reduced to smoking rubble.
___________
Preview: CVG