Soldier of Fortune 2
We don't know if this is the devs first map as the readme is very lacking in content but it does look like a first map. This basically mp_raven with the outside removed and a tunnel system in the
roof. Inside it seems that some things are to big and the textures need a lot of work and there are to many pickups. This looks and feels like a first map but with some pointers the dev would improve quickly. On a positive note the layout is fairly faithful and you can see it is not a decompiled map but made from scratch. Give it a go and leave some feedback / tips for the dev.