Okay. Bear with me, this is going to be a clusterfuck of several consecutive nightmares in the same night.
So it begins in a wood. I'm some... tall-ish humanoid creature, black and white (color split down the middle) with six dots on the face of the opposite color (I know this because this part was in third person. Don't ask). I'm standing somewhere in some foggy woods, there's a mansion a bit away. Next thing I remember is climbing into a window in the manor. It lead to a small, unfurnished wooden room with some sort of trash chute, a locked door and three scared children. I get the children down from the window (it was a 2nd floor), they run off across the bridge, I continue exploring the mansion via the trash chute. In the basement, more scared people... along with about a dozen mutilated in terrible ways, some open with a biopsy cut (despite being alive), other missing limbs. The ones I particularly remember was a gal with her hips disjointed so that her legs could be bent to her back and arching towards the outside in some sick parody of a pair of wings, another kid with his still-attached arms stuffed down his throat and another kid that had been... deconstructed for a lack of better words - every joint was separated (including the vertebrae and ribs), eyes and ears were hanging out, jaw hanging, and all that was holding the kid together was the tendons, some muscle here and there and some nerves. Anyhow after that the second dream starts.
Second nightmare started myself in some high school (which appeared to be a mishmash of three different high schools I had visited and some constructs of my mind) as my normal self. Everything was mundane enough if you didn't count the odd vibe and the fact that it was somehow dark out. Bell rings, I say something to my friend because I gotta drop some assignment at another class before this one. I head upstairs towards the class (which for some reason the hallway is empty), reach the class and open the door. Inside are lots of dead people - mostly rotten corpses. The teacher, at the front, died looking at the students, and most dead students were either laying their head on their desk (with their arms as a cushion) or propping up their head with their hands to look at the teacher. I get creeped out, look at them for a while... and then they all snap to look at me with empty (and I mean empty - not holes, but... nothingness) eye sockets. I turn around to escape, try to run - but unlike most dreams, I didn't run in slow motion, I straight up tripped. Scared out of my mind, I try CRAWLING away (at this point the dead became undead and were trying to get to me), but the floor felt like it was made of an unholy substance that was like tar-covered rubber - in essence, if we made tires of that stuff, it would revolutionize driving. And so I couldn't really move until the aforementioned friend arrives, picks me up and everything goes back to being as normal as possible. We have what feels like a ten minute class, then the bell rings again and we start heading towards the locker room.
Now a little bit of spacial information. The lockers area was quite... unique. Picture this: it was a room that had a hallway directly through it (with two entrances/exits thus). The hallway in question was about three people wide. Now assume the hallway goes east-west - if you came in through the west entrance, the corridor curved slightly to the right. To the left (thus north of the hallway) was a platform raised about four feet up, with small staircases leading up, and on that platform were several rows of lockers oriented so that every row was open to the hallway (even though there was a rail to prevent people from falling). To the right (south of the hallway) was a rectangular area that was about 3/4 the length of the hallway (which must have been about 10m/30ft long), which was some sort of lounge-like area with a coffee table and sofas, and beyond that it bulged out into an ellipsoid that was also filled with lockers (following the curve of the room and converging towards the lounge), and in the middle of that an open oval area that was about 10m/30ft by 4m/12ft, and the floor in that area was a deep blue.
So we enter that area. There's students all over the place minding their business. We drop our stuff at our locker and head to gym, exiting through the other exit. But again I forget something, and backtrack to the locker room. Except everything has a blue tinge to it, and the doors lock behind me. A lot of the students were slumped dead right where they were, some other were laid across the sofa, and one of them was smashed into the coffee table. I head towards the deep blue area in the middle of the lockers, but stop pretty much in the middle of the lounge. At this point, the view pans out from first person and into a top-down view as the dead rise and the blue oval shifts into the most uncanny, terrifying face my dream could scrounge up (which in retrospect wasn't all THAT scary, but y'all know how dreams work). Then fade to black, and the next dream starts.
In that dream, I'm running down a street towards my house (which is pretty much a wooden, rustic version of a house I used to live in - it felt out of place, looking like a shoddy little wood cabin in the middle of a medium-class residential neighborhood), entering the backyard through the gate of the wooden fence. My father's outside on a rocking chair, my little sister is playing in the garden, digging holes. I say hi to them both before one of my friends (my longest-standing friend) bursts through the fence in a green General Lee. He gets out and for some reason he's in a frog suit and excited to having found all that green. We make plans to go to the mall, and then we go. Timeskip happens (literally - there was no mall scene), and I come back alone in the car, now wearing overalls and a red T-shirt, redneck-style. Except something's terribly wrong. There's some sort of thick, black... mold? overtaking the whole garden and house. It's eating away at stuff, and is leaving some residue that looked like a lava pattern when it fell. I run across the yard, outrunning the mold in question, and jump in through the dog door (no it wasn't there before). I run across an oddly long corridor (which of course was bigger than the house would have physically allowed normally), and to my right there's a wooden room with a gurney. My mother is laying on the gurney, covered up to the neck with some sort of tarp. She looks comatose and has no hair. I continue on ahead, and soon there's another room with two gurneys. On it are my little sister and father. My little sister is covered in the mold, and her arms and legs are completely gone save from some pitch-black bones. My fathers' gone up to the neck, leaving behind angular, sharp and pitch-black bones (think of how most fantasy games portray obsidian/ebony stuff). I continue running, take a left into a baby blue bathroom, look at myself in the mirror - my head is covered with the mold. And thus I watch as my hair falls off with the mold like it was a wig, before looking at my face melt off.
The nightmare then cuts back to the first scene. I'm standing back at the bridge again, looking at the manor. It is on fire.
The nightmare cuts to a dark alley. There's something lying on the ground. From afar it looks like a dog. I approach it. It's a heavily mutilated woman in the end. I wake up.
Well it would have been dandy if it was that, but my body disagreed. I got a final treat as I got a dose of good ol' sleep paralysis, where I see a yellowed version of the girl from The Ring phase out of the wall, horizontally and right above me, wielding a knife, until I close my eyes tight and strain myself to move, after which I literally LEAP away from my bed (there was an open area under the bed and well after this ordeal, couldn't be too careful about bed monsters), open the lights, leap back to the top of my bed and proceed to stare at the exit to my room until the sun rose (no idea how long it took).
Good thing it was Saturday.
Though it was not all that bad - it happened because I tried to unlock the powers of lucid dreaming, and I ended up succeeding for a month before getting distracted and forgetting how.
There's also that two weeks where I had a recurring dream that I was a soldier fighting against japanese forces. They always happened three times a night, and I always died, feeling the method I died without pain (would feel cold in the torso when stabbed/sliced in half, my body would spasm and I'd feel pressure points when shot).