I like it. It has a nice, murky atmosphere. The people on the walkway could do with a tad more detail, just to help with recognition. The mech is awesome. No real criticism there. I love the glowing pylons disappearing off into the fog. I think the text is a problem. It stands out too much. Everything else is surrounded by a mist, with soft glows and blurred details. The text looks a little slapped on. You might be able to add a little gaussian blur too it, maybe drop the opacity. I think it might look better if it appeared similar to the lights above it, graphically. I know this was done quick, and I think your technique fits the style. Good work.
Can't critique because I am not a good artist but, sharpen the images and add some life?(color, perhaps sunset so you still get the gloomy effect I am getting or add street lights if you want to do shading.
Just a few things: maybe, armed guards on walkway make sure to light the scene with the lights shown in the scene (green or yellow lights giving green or yellow highlights) make the "GATE M" hologram larger, maybe give it a rectangle holo-frame