This level isn't too hard. The hardest part of it is the red mech trap at the red key. It took me a while to find out how to maximize my chances to get out of there unscratched. The trick is putting proxy bombs in front of the door which makes the red mech stunned and time a mega missile you that mech won't fire while the other one is behind cover.
The boss at the end of the level isn't too hard. You have a mega missile and smart missiles and spreadfire, use the invulnerability first then the cloak, finally escape the the room and snipe last hit points of the boss.
The original music crashes the game upon the first loop. So I replaced it with the level 11 music from the original set.
Calmarius currently has 53,810 views spread across 155 videos for Descent. His channel published over 1 day worth of content for the game, or 34.43% of the total watchable video for Descent on Calmarius's YouTube channel.