for the sky box all you need to do is make a .cfg file (in Notepad) and type loadsky "dash/moon"

There's been a rash of imperfect packaging jobs on Quadropolis recently, more than usual. I'll give you the usual stuff.
First, you didn't use lowercase filenames. Not everyone's filesystem is case-insensitive. Second, you should keep everything in one name, in this case, the readme should be something like "readme_hive_demo.txt".

On the skybox, create a file named "hive_demo.cfg" in packages/base, and in it put the line "loadsky dash/moon". This'll load the skybox with the map.

Now I load up the map...

Hm. I see this little bugger all the time. In the starting room, if you look at the upper outside corners, you see a bit of geometry funkiness. This is caused by inconsistent grid sizes.

Overall, it's a very nice map for a start, and it could be a very good SP map when it's completely finished. To make it more of a survival-horror, you're going to need low numbers of enemies for long periods of time, then large numbers of semi-weak monsters. That's wha most games do, and it works in Sauer too.

You mentioned "dim lighting", but most of the lighting I saw was pretty bright. Try toning it down, and use shadow as well as light.

Wow, this was quite smooth. You have some really great ideas in your map. It is overall too narrow and you may consider using configuration files next time :)
The map is very small but is just interesting to play. Come on, make it a big campaign or something ;)
It should be more than 2 minutes long, IMHO!

For now - 1/5. Add spacing - 2/5. Add good configuration and experiment - 3/5. Make the map much bigger and longer to play - 5/5 :)

This will be a great SP map, when you've finished it.
I agree with Drakas on the map being very narrow,
but in SP you can get away with it more easily than in MP ...
I don't think you'll need to rework this one,
but give the player some more room to move around in on the next maps :)

I definitely also agree with SheeEttin on your packaging.
See Distributing Maps (wiki:general info) and Quadropolis Packaging (here:specifics [but still WiP]).

To maximize believability I'd suggest you work with multiple and small red lights in that passage at the beginning.
To enable your Ratamahatta's to attack the player when he leaves the base you'll need a trapdoor mapmodel - replace it (in your CFG [use mapmodelreset]) for the one door-model you haven't used yet; place them underneath the monsters - thus blocking the teleporter-booths you will have created beneath them ... then just place a teledestination (or maybe better one teleport/-destination pair for each monster!?!) for maximum effect and an invisible trigger at the green button (incidently that light could use some tweaking too IMHO) ... that should give the player a nice battle-yourself-free experience :)

Keep it up!

Thanks to everybody who took the time to download and comment on my map. :)

I've read all of the comments and a lot of things will be taken into consideration.
I was slightly worried about adding too many lights as I thought they'd take up a lot of memory, and wouldn't be much good for slower computers, but I think I'll follow MeatROme and SheeEttin's advice.

I'll also make sure I package it properly next time.
I didn't know you could make a .cfg file for custom maps, I'll definitely use one. (Though I'm a complete newb at scripting. )