Nice map, better than most first maps. It's to dark inside. It would look alot nicer if you lit up some of those areas more. The prison section needed some lights in the cells. you don't need to make it all bright but just some dim lighting so theres no real blacked out areas, you have toilets and stuff in the cells but how can you use them as weapon if you cant see them.

The outside areas is to square, well rectangular, break up those outside walls with some variation, the grass is kind of basic too, you could ude the displacment better, try using 3 or 4 setting, the few raised areas you have are to sharp looking.

also add some throwable stuff outside, it's pretty bare. The buggy is pretty useless, can't keep it going around the perimeter without bangin into the outside walls, but i bet its fun to run someone over

nittpicking here, but the window throws wood gibs instead of glass

These are nice but too tall, I can't see the courtyard below, so they're useless. make them lower. Theres quite a few windows that are to tall or not wide enough to jump through. that would help gameplay alot if fixed.

you have a ledge along that white line, I drew it because it's to dark to see it. add some lights on top of it, might throw some cool shadows. Its to dark through there, as is alot of places.

You have quite a few of these walls sticking out around the map. to easy to get stuck on, clip them or angle them so it fades into the wall behind it. stairwells are to tight, but I dont think you can fix that without major changes.

Pretty boring basement, dress up the columns atleast. and change that ambient sound your using in there, it's almost deafening it's so loud.

good potential, not a bad first map. keep it up.