This is as much a review of Survival.lua (I presume this is what you're supposed to use with this map) as it is this map.
It's reasonable fun even if you play this solo on TC. Because of the huge amounts of regenerating ammo, it encourages one to experiment with different weapons and techniques. I've used it to try to get better at using the SMG and shotguns, with some amounts of success. But I still suck to some degree.
Only thing I would recommend is more SMG ammo.
Survival Map: the duece. Maybe sometime I'll release a manual so there's no whining about anything. If it's there, it's there for a reason. Good luck!