Okay, I have unlocked munbary complex(all four directions), have both 2 hearts with Logan and Ste, helped everyone during the country road event, had seen the gloryhole with Ste before Logan fixed it(and the dialogue after it is fixed), and my mouth experience is beginner.
And I would appreciate help for this so I have uploaded here https://filebin.net/nh02690gh71vicmf
But do take your time, since this is like to fulfill my pure curiosity.
I have no idea why it doesn't happen: the minotaur shows up but the game over scene no. This is my save https://filebin.net/5x4hx8u550h0fyl6
I've tried to see if lowering your stats does anything and nothing happened. If you find how to unlock this scene in your save let me know!