Cool Atmospheric Piece
Although it's a pretty generic and lacking plot, it's not a genre of movie which gets attempted much in Flash. To be more precise, it was submitted a while ago and probably one of the first of its kind.
The graphics were there, but they weren't all that. Sometimes shading in black and white can be difficult as you can only use a limited set of colours, but I think your highlights and lowlights worked well.
The music was there, it really set the atmosphere perfectly. I though there were too little sound effects. Besides gunshots and creaks there wasn't much else. Having said that, the text instead of actual spoken words added to the atmosphere and made it much better. I think it would have lowered the intensity if you could hear him speak. I hope it was intentionally done the way it was.
In terms of animation, there was little to none. The occasional tweening and change of graphic forced this piece to rely heavily on simple change of scene and progression through backdrops, which although it was nice it may have benefitted from a little more effort.
Well done for trying something a little different.