Success!
It turned out to be much better than I thought at the beginning. But the doppleganger kings populating the air temple gave me the impression that our hero wasn't buff enough. But he is actually. Found many wands that I emptied on the AKW and during the final fight even found the thick gauntlets I had been waiting for all the time. So on my way back up I could pick up all the potions and food I had left on the ground.
Saved on DL:1 on turn 52966 (8000 turns played) next to an ogre king ready to feel the power of beastfighter berserk.
Started at character level 19, finished at 31 (we're already learning the mighty secrets of Haggling).
The next player will still have to do the earth temple and can theoretically visit no less than two greater vaults if there's time.
Savegame:
Munn_she.zip