Good map, didn't find any bugs (except for one or two zombies dying for no reason - I think they fell down somewhere?). Only the defense position when you walk up the stairs is too easy imo. First you can defend the entrance to the stairs, then the stairs, then the corridor behind the stairs and then the corridor around the corner. And if everything goes wrong you can jump down to the train. I think it would be a bit more difficult if there was a bridge connecting the two upper levels so zombies could come from both directions.
I am just curious about the locked doors, right now there is nothing beside, but what will be there and how to open them..
I can't unpack this map... winrar tells me "unknown method", "no files for extraction".