This review for your map is only my opinion.
1) I tried your map because I am fan of dust2 map. I know your map is set at night time but its little to dark and objectives too, maybe if you add some lights around it could look better, so we can actually see some nice coloring or set better night settings.
2) The size of the map seems right at some places but somewhere its really to small.
3) A models that you used for debris are not good, they just don't fit there. Also debris are on bad spots for dust map.
4) This map doesn't have zombie windows entrances at all ( only 1 hole in the wall ) otherwise all zombies are rises.
5) A secret room is not interesting at all. There is nothing except for PAP.
6) There is nothing custom, nothing added into map for example some new custom rooms or areas. This is only base layout of old dust2 map which is not interesting to play and get bored really quickly. It feels like old CS 1.6 dust map.
You can still work on the map and make new update. I hope my review is not to negative but I think it's better to see what other people think about your map, so you can make better maps in the future. I know this is fan made map and all maps are great that people made including yours too. We are not Activision so we cannot make really PRO maps but we are WAW community that all maps are made by fan people of zombies and they are all great. FAN MADE MAPS
I really like how you made the layout of this map or the idea make a hole on cutwalk as shortcut to the tunnel. For your first map its great what you have done so far and I hope you will keep learning and making new maps for WAW community.
For your first map its really great!!!