BOth fast and furious gameplay together with a little tension building. The possibility to just hop on and play it as a newer player but if your an advanced player than you'll have a lot of options and jumps to experiment with. Has a lot to do with the combination of gameflow and look. If the less crowded parts look real good and have a lot of athmosphere this will build up tension and will create the soul of the map. This is what really makes A map special.
Soul is nothing mysterious.
As your heading towards the rail gun your already spooked if your not going to be blowed out of the sky. When you make it your planning your attack And hope you'll be able to rail somebodies socks of. They are human so to say. Why do you continue playing a map well you love the soul of the map. It's just like your friends they have some things other people don't have.