Finishing my first honour mode run; cheese or true?

Hey folks!

Finally gotten an honour mode run to the 12th level, where I'm ready to take on the final fight. On one hand, I'd like to finally beat this challenge. On the other hand I can't decide if I should cheese it or not. My options are either do the fight organically, or cheese it with >! Invisibility potions before climbing brain, fireworks to kill the brain, etc!<

How did you finish your first honour mode? Really don't wanna miss that golden die

Edit: thanks for the info everyone! I ended up challenging it and took everything down fairly easily. I was through to the final encounter before the artillery started