All these were taken today on the level Floodgate. In the game were me, Noxiw and xcheph AKx Hope you like them.
I would have to say that a couple of them need a bit of work, because one of them is just looking into the sky. I would recommend putting a lot of ascetic features in your shots that make the viewer find it appealing, and cool to look at. You could include the Master Chief looking out at destruction and chaos, or mix that idea up in whatever fashion you want.
The third picture is definitely my favorite. You took quite a unique theme and angle for it. Your second picture is my runner-up simply for its soothing landscape feeling. Keep it up!