nightmare

(Date: Couple weeks ago)

I dreamt that I was in the basement of my school, where a laboratory had taken it's place in my dream. I watched through grates as a monster broke loose.
How it looked?

Pretty much like a comodo varan.

I watched as it grew larger, the more it ate. I ran up the stairs, out of the basement, and the dream skipped over the part where I would run to my classroom. I warned everyone in there, but they didn't seem to take notice. I thought 'screw you' and ran outside to warn other people. First when a loud roar sounded and the ground rumbled, people began to fear and take me seriously. I told them to flee and stayed for a little while longer.
Then, as another roar sounded and another rumble shook, I fled for my life.
I ran up a road going north, then turned east and made it to a part of the city that didn't exist. The dream made that part up for me. A suburb, with tall bushes, fences and gates. I needed to climb over one gate, but a girl named Katja, from my parallel class, which I have no further relation to, asked "need help?" with a smirk, and opened the gate for me. How she did, I do not know.
Behind the gate was two dogs leashed to something, so they could not reach me, but I could not get past. I needed to get past. And I had to get past fast. The comodo varan had grown monstrous and roared higher and higher, and the rumbles got bigger. Through the whole escape, the comodo varan got closer.
I climbed up the tall bush/fence to the left, then balanced my way past the dogs. As I got down, I ran to a forest, which I have never seen before in my life. A guy from my class and a guy from a school close to mine were walking on the forest path. I walked with them for a moment, but then continued to run on my own.

What happened then is a mystery.