Did not complete. Finished 98% of the room with a lot of hints with 2 people. Most of the challenge came from not being able to see clearly / missing things in the dark room. It felt rushed because there are a lot of puzzles. The puzzles themselves weren't hard, but not all of them were "intuitive." Most of them actually felt dumb, lazy, cheap, and like busy work. A bigger group definitely could complete this room because it's like a divide and conquer room. The puzzles don't really connect to the story line and it's not very linear. I didn't like how the puzzles felt random. There were no riddles, clever wordplay, interesting puzzles, etc.
Although the company says this and Prey are their hardest rooms, they are only hard because they have more puzzles. In terms of clever puzzle design, I'd say Perfect Crime was the best.
From most to least favorite, I'd rank their rooms as the following, and I wouldn't recommend anything below Prey and Masquerade:
Perfect Crime
Exodus
Prey
Masquerade
Nuclear Annihilation
Quarantine
Particularly interesting or different
No