Sim used: XP11 Cessan 210 with REP, xEnviro (should have taken the Baron but it dose not have oxygen and I wanted the high for the tailwinds)
Notice the sudden drop of altitude at 8:53.
Severe Icing in the clouds, I dropped like a brick. I'm in total IMC and my instruments are nuts showing me stupid numbers, great, "s**t pitot icing", I forgot to turn on the pitot heat, I turned it on, gave full throttle, and I tried to keep level attitude, altimeter frozen speed nailed to who knows what speed not moving, I total forgot the alternate static tbh, lucky me pitot heat killed the ice in a minute.
It was a sudden realization that I'm in big trouble, but the controller was faster I think, he was right with me helping.
"I see the ground, uh oh that's not good" right over the mountains and in about 1 - 3 nm visibility. I'm slowly regaining control.
The scary part was when the controlled asked the number of souls and fuel on board (was 4 person, and 4 hour remaining)
I was flying but barely able to maintain altitude (was what I was thinking but I was still descending from the looks of it)
The controller vectored me into a valley to keep me away from the ground he literally saved my virtual life!
Once out of the clouds ice went away pretty quickly and I was able to climb again without a problem, in real life I would have went for the closest runway as fast as I could for sure.
This was the most scary experience I ever had in a simulator in 20 years. WOW
Talking to someone made it so much more intense!
PE at its best.
Thank you CONTROLLER, THANK YOU AGAIN

Ps: On the final I encountered heavy snow and icing again almost crashed on the descend. Under the clouds it was VFR no problem. I made a pilot report about it to center.