It turned out I was incredibly lucky.
Factor 1: Flax with Labetta against Inferno with Piryu.
Factor 2: Ideal placement of objects for one-hit kills, which I easily collected up to 115
Factor 3: Plenty of resources for building the Mage Guild
Factor 4: The most important one. A Dimension Door scroll on respawn.
Forgetting that we were playing anarchy, with a DD for one day I managed to skip ahead while finishing GM5. And in GM5 - Implosion.
This allowed me to easily and painlessly take the Dragon Utopia for wings and magic stats.
After that, I decided not to drag it out, and seeing an army on a noob in the tavern via air view, I crushed Müllich.
Thanks for the game.