The first, second, and third pictures are pretty much the same thing, with the same things going on in them. But they look pretty cool with the ODST holding the machine gun turret, and the lighting looks pretty cool all around him. The last one is definately my favorite out of all of these, i love the green lighting effect on your spartan, and it looks like the BR is firing one gigantic shot, because there are golden sparks flying all around.