Before anything else, I have more info about the painting thingy, so in the OPENGL renderer the paintings are misplaced, but they aren't in software, just so you know. You probably played the map in software and there they were normal, but of course both of these renderers are janky and sometimes bite with each other. -_-
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I'm bad at reviewing stuff and I also didn't had enough sleep for me to think straight today, so expect... not much. 
I'm not exactly sure what I just playing, but I sure did like what I did play, and I would like to see it developed further. :3
So first of all, this type of gameplay is pretty much my favorite type to be honest. What I have in mind is like light, no-heavy-action addons like Desert Blast where you can take stuff at your pace and explore stuff, these make me kinda calm and are just fun to play through. Something like Gmod maps. So a plus for me. :3
I also liked the visual style of this addon, mainly the dream "NiGHTS" stages. :P (
A rather goofy coincidence...) And the gallery was pretty fun to just walk through, this part reminded of me of MyHouse.WAD (which somehow as a whole wikipedia page made for it, so that's interesting... •_•) and the paintings themselves are also pretty well made. :3 (And if there will be more of them, then I would love to see one portraying
Swift. And heck, if there won't be no more of them then I wouldn't mind if you switched my painting for the one with Swift... :P Not saying it's bad or anything, but it just would be cool to have her there too. And I just noticed that my painting is named "WATRGRAS" which is actually pretty goofy, I like it. :P)
And I feel like the atmosphere is pretty well made, at least to me. It also looks weirdly cozy in way.
And one technical thing... Could you please try to compress the music or even the sfx audio files a bit...?
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It may seem kinda unnecessary at first, but these files together take more than 90% of the whole file size... and it's just not the most convenient to download 50 mb pk3. For me at least, it just makes the addon bloated a bit. And honestly, all you have to do is just convert the music files from MP3 to OGG. The PK3 file size will be very thankful for that...
(And I also will be...)
And always remember to convert MP3 files to OGG one's when you're adding music or even sfx to your addon, it makes the file size lighter without losing any of the sound quality. And you can even go above and beyond like I do and compress the OGG's, which isn't required, but ye... :P Converting the audio to OGG format is enough.
And some executors require floor touch which isn't a critical problem, but you sometimes can just jump over the triggers. Especially visible in the dark room with the "fabricated" painting. And it's also a multiple use trigger so you can just:
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Not sure if it's intended, but I rather mention it just in case.
And it's more of a funny nit-picky thing, but the small thumbnail for the gallery has visible FPS counter in it. :P
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Just remember to turn off any HUD elements when doing screenshots later on. (← Not sure how to make it sound in a positive tone though. :C)
So to summarize my tired babbling. I like what I see and I want to see more of it. Just remember to polish stuff up later on. :> (And try to care about the execution of ideas as your main priority before details/decorations, It may cause you to spend too much time on details than on making the stage itself, and making it fun to play at that. I'm not saying this because I'm in the literally same situation...
)
(And I like how the change in your custom title suggests that mapping and ideas made you wide awake after being eepy all the time. :P)
cobalt.tools
