By the looks of it they are just making the same game, but simply adding some new lame features, new maps, creatures, shit story etc. The engine and everything basically looks hardly tweaked at all. Tbh I actually even kinda like this one. I mean its still shit, but the scavangerehunts are just so fun and the somewhat hard difficulty is actually quite enjoyable. And now that melee is somewhat at passable level, its quite alright.