G4MERS:"Sniper Ghost Warrior 2 is a cheap game, ugly game, and a game is a game for once. Although the title is based on the graphics engine CryEngine 3, is on the TV / monitor does not see. Compartmentalization of the story, corridor locations and multi frighteningly weak - that's the Sniper: Ghost Warriror 2 is." 5/10
The first has plenty of invisible walls, but it still had areas a little larger than a standard shooter.
Here they allude to just 2 levels, one in Tibet and one in Bosnia, that are more open, but I wonder to what extent they are open since the rest is so narrow.