Alright. Having just played through it, my review:
First, the good.:
The map is well designed. Everything looks pretty good, and some creative brushwork definitely adds to it.
Some new concepts helped to freshen the experience. The alien turret section, while aggravating at first, given that you have nothing that can destroy it and no way of know where to find some heavy ordinance, became a fun game of cat and mouse after getting the RPG. Having to backtrack to turn off the fans was a good idea too.
Now, for the bad:
Combat fatigue. There is so much fighting in this map that, around the time I reached the turret standoff section, I was just plain exhausted. You use wave upon wave of enemies in a manner I haven’t seen since the original Doom. There really isn’t a strategy, its just: walk into next room, nearly die, grab whatever supplies you can, fight enemies that spawn because you pick them up, rinse, repeat.
In fact, so many enemies spawn in the standoff section that they actually stack up, requiring explosives to eliminate five or six enemies stuck together. This mountain of enemies actually destroys the better arena at the beginning after you meet the survivors, because the player ends up camping in a room and not using the turret, or fighting the enemies. They just sit, let everyone kill each other, then slowly tear through whatever is left as, in my case, I did by camping in a room with a shotgun waiting for them to come through the door.
The ambush by six to eight Black Ops at the end was just poorly done. They are made to be used in small numbers, in arenas where they, and the player, can move around. Their damage is high because of this, and I also called it before it happened.
It honestly felt like you were punishing the player for making it through your map. There needs to be some down time. Add a puzzle where they need to unlock a door with only a couple of weak enemies to stop them. After they killed that turret? Don’t spawn more enemies. They need time to relax and take a breath after that.
It has the makings of a great map, and hats off to you for making and releasing it. But, you need to work on pacing. Pacing can destroy even the best maps.