A good classic dungeon, in the OSR tradition, well crafted and with good drawings illustrating key elements. I can think of two possible improvements: some introduction to give context and hooks, and also adding loops to the dungeon to create more paths and avoid linearity. Besides those suggestions, it's a well crafted scenario!
Viewing post in In the Claws of the Mole God jam comments
Thank you, Francisco. I completely agree about the loops. I had plans to include some (as well as add verticality) that I cut during development. The only artifact of those plans is the hole in the ceiling on level 3 that goes to the surface. If I revise it, I’ll surely include more ways to maneuver the levels and to enter and exit the dungeon. Thanks again for reading and for your feedback!