Score 6783, killed by a wraith on level 13, due to a poorly managed fight against too many foes (two centaurs, two trolls, the wraith).
I chose the staff of poison [4/4] from the vault on depth 2, since I had no way to check the armors and weapons for curses at that point. By the time I died, I had started to reluctantly and slowly enchant it up to [7/7]. I was still using the +2 mace from level 1, and the splint mail from depth 9, which I had protected.
The vaults on depth 5 were quite the puzzle, even after a potion of detect magic. I chose the ring of stealth from the first vault, thinking it would pair well with the mace and poison. I almost chose the war pike in the same vault, which would have made for an interesting end-game weapon as I can now see with omniscience.
I rescued the ogre from depth 7, which was still with me when I died. On depth 8, after noticing the ring of clairvoyance was +3, and not sure about taking the ring of regeneration, I settled for the former, as a further combo with stealth and mace. Since I had no regeneration, I was careful to have the ogre learn to cast protection from one of the many goblin mystic that haunt those depths.
I did not want to enchant the staff of poison too much, and had not yet found a final plate mail, so I decided to enchant my rings further: I had them both at +5 when I was at depth 13. Overall, the combo worked well, I was notably able to one-shot ogres and trolls with a bit of care. Fighting against aware trolls was harder due to the slow mace, I had to use the wand of slowness and staff of poison against one before I could finally take him down.
On depth 13, there were two trolls guarding a centaur, and a wraith sleeping in the same room. As omniscience shows, a few turns before I arrived there, a team of centaurs had also just entered the room. Fearing my wounded ogres were about to jump in the middle of the pack, I chose to lead the charge. When I saw my mistake, I started retreating. Unfortunately this would leave my protection-casting ogre exposed, so I foolishly tried to cast discord amongst my enemies, way too late. Fatal mistake! I still had scrolls of teleportation, potions of descent, confusion, and speed, so there were several ways I could have survived this (maybe).