Note that the maps is UGold 227I only. The fact that the map is stuffed with static meshes makes "pathin" almost impossible.
This is visual vise the weakest of your maps ...I can't test it because I'm not home.
But what I see is a nice brush-work with a dull repetitive texture (stone?) and a boring white zone-light lighting.
All the wall textures are interwoven with each other due to this lighting, there is no depth.
You have this greenish skybox and doesn't have a corresponding lighting in your map.
Add some green lights (or change your zone light to green) and add some red and/or violet light-sources for contrast.