It feels like a large field with stuff dropped here and there. You might want to take example from the official maps on how to handle (empty) space. It might also not be the best idea to block areas in the middle of the map with invisible walls, it doesn't really fit the gameplay feeling. Last tip from me is to tilt the ladder a bit so it can be climbed at all, stuff like that should come up in playtesting anyways

Light sources do not create "ambient light" - they have a small range and should be used to highlight certain darker places in your map

Nice map!
- More props would be nice, you can easily fit ~600 props
- Light points are the main source of low fps in this game. You have a bunch of them in the sky together (remove them), 6 of them on the window far away (replace them with 1 big light source, you can scale it as a normal structure)
- There are places on the map where fps drops too low - e.g. there's one tower with a lot of light sources on it - you better remove them
- Moreover this map is during day and outdoors, so light from all the lightsources you placed is not visible in daylight (and lights have very limited range of visibility FYI), so you can probably remove most if not all lights from your map