Very detailed, and I like the pose of the character. You really convey a sense of motion with the positioning of the character, particularly with your use of the blurred out background and the passing snow in both the background and foreground. I also enjoy the slim yet tactical appearance of the character's uniform. You're able to pull off the skin tight tactical look for this character very well, and make it seem plausible in appearance.
The lighting also very good, and certainly helps in giving the character a more dynamic appearance. The lights on the mask add to this as well. All round good job.