Hey, guys! I haven't really posted here in a while. Been mostly playing HOTS instead of SC2, and I'm not making maps anymore. I probably won't be doing much of it in the near future either, since I'm going to be head editor for the school newspapers. Also, I'm starting my master's degree in economics.
Despite that, I thought it would be cool to make a make a map again at some point (a whole campaign might be too much work, sadly), and I thought it would be cool to do a horror-style RPG map where you start out in a base, and have to venture out at night into the wilderness to do... something. The main feature would be some sort of "pulse measurer", which basically tracks your pulse (or something). Engaging certain zones, fighting enemies, and taking damage would heighten your pulse, and if it goes to high, you die.
There would have to be cool backstory (of course), multiplayer options, different playable characters, several cool mission objectives, stealth mechanics, etc. Feel free to contribute ideas. All I have is what you see here, so as you can understand, it's pretty fresh.
The Haunted Forest map by Bounty is pretty eerie like the feeling you're describing. Maybe check it out for inspiration. It has jumpscares though, so it's not for everyone. This is a pretty accomplish-able concept, but it would take me a bit of time to do, which I just don't have right now. If you ever want to take a crack at it, there's plenty of tutorials in my signature to help you out.