Well, what can I say. I saw the screens and thought that map is a messed up pile of garbage, but, being a big alien shooter fan, I still decided to look at what on the earth is that…

…And boy, oh boy! I haven't had so much fun in ages! Especially given the fact how much I wanted to play Alien Shooter in coop mode back in the days!

So, what's cool:
-Atmosphere of the actual ALIEN SHOOTER! Surprisingly enough Alien Shooter Atmosphere fits Black Mesa setting, as both are laboratories and are using similar gray color schemes.
-Custom weapons resemble same of original Alien Shooter: Double pistols with infinite bullets, shottie, all-time-favourite minigun… Also, custom items, like health powerup!
-Meaty gameplay. You'll find tons of monsters around yourself.
-From what I understood, map itself revolves around original Alien Shooter Demo version, which really brings some nice nostalgic feelings.
-Map may require cooperation, as monsters would overswarm unprepared team from several directions.
-Respawning ammo and stuff. Considering Alien Shooter Meaty gameplay, it's a huge plus.

What should be worked on:
-First, and foremost, monster models. Obviously, current monsters are just temporary substitute for HD models, but they really ruin the immersion as soon as they come closer. I would also recommend adding one more monster model to the map, which is that big two-legged monster (unarmed version). They also were present in some of the demo versions.
-The lightning is strange a bit: Some areas are dark, some are light. If you remember old alien shooter 1, it never had complicated lightning. There only was two options: Light ON, and light OFF, which blocked all the doors and made everything harder to see. Complicated lightning like the one in the demo map was brought at Alien Shooter 2.
-Speaking of lightning, I'm not sure why would you leave red emergency lights on. At first I thought that doing everything 50-70% darker was a bad idea because players wouldn't be able to see the monsters, but then I realized that monsters always have glowing red eyes, even when it's full darkness around.
-Some places can be abused: While completing the map alone, I found myself jumping on the tables and shooting the monster without any problems most of the time. I also managed to jump over the monsters and escape inevitable death. Maybe there's some script which could prevent players from jumping on your map?
-Gameplay gets repetitive: And it's not one-monster-type to blame, but rather spawn system. It always comes down to me standing in front of monster spawn and spawn killing them all, one by one. Perhaps, spawns should be placed in more tricky spaces?
-No secret areas? :( What about those cracked walls that can be broken? (or maybe I just didn't find any?). I'd also place ammo inside some of the boxes.
-Horde mode has really strange map. Why didn't you copy original Alien Shooter survival map instead?
-Textures need to be refreshed: Most importantly orange monsters. Why do they have pink skin degree? I'd also recommend updating textures for the walls and floor, taking them from actual Alien Shooter.
-Explosions range should be tweaked: Usual barrels are useless to blow since they don't do any damage to monsters whatsoever, while dynamite is a bit too powerful (I do remember how strong the bomb was in original Alien shooter, but it's really hard to plant the bomb & escape the explosion in your map)

…Overall I really enjoyed the map, despite that huge 'to be worked on' section in my comment. I just hope that I helped you in detecting current map issues.
Imo, you should do demo version V3, with updated monsters, textures and stuff. (I understand that you may disagree with me on certain aspects and that work on models is hard, but still, seeing at least some visual improvements would be a great thing…)
So far I'd give this map a mark of 4 out of 5.

This went from fun to excellent in the minigun room. I want more arcadey maps like this.

KARDEŞ UĞRAŞMIŞSIN +REP

Good to know this map uses my cross model without mentioning me anywhere.
Stolen from my bossbattle map (http://scmapdb.com/map:bossbattle).

Good fun if you feel like a slaughter map.
Was a bit unsure about forcing third person but it works well for this.
Got a bit overrun playing solo and it gets a bit laggy in the room when lights go off and you get the machine gun.

Looking forward to trying the final version and I will give it rating then.

Extreme fidelity just look https://www.youtube.com/watch?v=R0L83cJZ8Jo

would love to see more from alienshooter