Rust Stackable or multilevel zones

I just made a multi-level maze on my server and would love a way to trigger messages and some logging/scoring/prize giving actions for when a player gets to the next level (or some other messages when they walk/fall into a trap), as well as a way to prevent structure damage to the building itself. I was looking into zones for this but the plugins I've looked at seem to create a ground to sky column or a dome.

Was looking into maybe doing this myself but just started a new job and free time vs sleep is going to be wildly unbalanced for a while. This also seems a mite complicated for a first plugin, so I figured I'd put it out to the experts.