There are 2 films numbers 2 and 6 under this site's playlist which give excellent of Stalker which really portray life in the Zone. The remainder of its videos are about how the film was made. This includes the 3-D modding of the 2 mutants one of which is a pseudogiant, so anyone who can mod may be interested.
To the right are some suggested films and one deals with an assault on a bunker such as Sakarov's. It also shows in an adjacent film how the bunker was constructed which may offer modders ideas on how to go about the design of such a bunker.