Graphic designer / concept artist / illustrator etc etc etc. primarily dealing with bands for album art and small business promotional needs.
Takes the idea for the original game and all of the great elements, ads new ones, a new vision of the zone where the exploration is better than any of the official releases and removes some of the irksome gameplay flaws.
Theres so much more than that, but I would be spoiling it.
In short it's without a doubt the definitive S.T.A.L.K.E.R. experience in my eyes.