Wait a minute....back up...You mean there's a mission? You mean to tell me that there is a mission to be completed in every map????
Lolz!
Assault is the map that I learned to play reg css on (hence the camping in my blood
). You will find that if you try other maps, you'll get frustrated a lot at first, until you learn them, but then you'll really enjoy them. That will certainly give you more map options/servers to visit!