Try the Cube Wiki for tips on using the engine.
I'm sorry for that this map is very heavy cause I've used too detailed lights for the map but I hope you'll enjoy this ^^. Another problem I will "repair" is that the map isn't not totally finished and contains too much envmap. So I will finish all, delete envmap and reduce lights quality. It will become a very huge map.
I've also started another map, called "arena", this will be a small map designed for capture point or CTF game.