So I've tested the map a bit more and here are my personal opinions: I played alone, so it's a bit tough to judge if there are enough weapons and items, but most of that seems alright. I think a map of that size could use more than 1 long jump (I think on top of the stack of boxes in the room with the tau would be a good spot as it's on the opposite side of the map as the long jump; this area can be reached by jumping from the torch by the stairs), and I wouldn't mind seeing a bit more HEV (for example, there is one health charger on the map, with two health kits near it, but in the large room with the circles in the ceiling, there is just 1 battery in the corner, while the other corners remain empty). 9mm and shotgun ammo seem to be plentiful however :). Lastly, in the room with the light columns, having to go underwater for a shotgun, a common weapon that cannot fire underwater, seems to be a bit of a waste. I'd rather see a crossbow there.
Here are a few small other things if you want me to be very picky:
It would be nice if you could see when the health charger is empty.
The columns of water on the walls inside could use a water sound.
The ammo in the same rooms as these columns faces random directions from room to room (including some shotgun which faces towards the wall).
The lava could make sound (I've got several good lava .wav files if you want them). If you do this, the volume of the sound water near by should probably be turned down.
The worldspawn entity still has references to the .wad files which have had their textures embedded into the map.
You include sounds that are already in the half-life.gcf file as custom sounds (such as crickets). This sound, however, could have it's bitrate boosted to 22050hz and then included as a custom sound.
swamp2.wav is only 11025hz. If you have a 22050hz copy, that would sound better. If not, I've tried re-sampling it to 22050hz myself and it made a very noticeable difference. Considering this sound is heard constantly, the improved sound quality was nice on the ears.
You might make the torches give very slight burning damage.
I think that's all I've got. Obviously, most of these are just picky details. As I said in my first post, I REALLY like your map. The geometry, textures, lighting, sounds, and feel are very good. I will definitely put the final version of it on my clan's servers

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