Not a bad little time-waster, for as far as it goes. In my case that was probably two or three hours. The repetitiveness, though, kills it. More to the point I missed the sense from Prototype 1 of having to clean out infected mutant areas.
Here, instead of chiefly killing mutants, you're performing a kind of human cleansing, since the goal of the game is to murder a great number of soldiers. In order to make this remotely morally palatable, the game is constantly pushing the idea of retribution for atrocity -- these soulless military scum, it says, deserve to die. They're cruel, heartless. And you should go out and...and...eat them! Stop and think about that for a moment.
The problem was put succinctly over two hundred years ago by Voltaire: "Those who can make you believe in absurdities can make you commit atrocities." Thanks anyway, but I'd prefer my gaming to make me feel a bit less filthy than this tiresome mass-murder simulator.
After you play the first 5 missions you have played every mission in the game...Green Zone is like Yellow Zone is like Red Zone...just more infected...same boss battles, same lair battles, same hunt guy down battles...Yes it is a nice sized world but they seriously they came up with 5 missions and just turned them into 50 but changing the name of the mission!