Neat little game! I managed to beat it on my first attempt thanks to liberal use of magic and a lotta enchant weapon/armor scrolls used on a long sword and reinforced armor. I think my armor got to +8 for a total of 16 AC a bit before I got the amulet which let me just facetank dragons in melee as they could barely hit me enough. During the trek back to the surface I actually tried to vorpalize my sword again which broke it, so I had to bash monsters with my crossbow for a while! That ended up being pretty tense and fun. Weird thing though — early on, I found a ring of slow digestion, and after a bit, I never lost any hunger again, even without any rings on.
Also, rings of invisibility are op as hellllllllll lol