This is level is not hard, but it took me quite some time to get re-accustomed to play Descent and relearn the good old tricks I used to beat levels.
The deciding point is the room with all those laser gopher robots with that hostage. It's very claustrophobic and lots of luck needed to avoid getting blocked when entering that room.
At this time, Calmarius has 52,576 views for Descent II spread across 111 videos. This game accounts for over 1 day of watchable video on his channel, roughly 41.88% of Descent II content that Calmarius has uploaded to YouTube.