The two walkthroughs that I use that are AFAICS the best are:
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It's Shatter - BG3 walkthrough
This gives you a relatively consistent walkthrough in a relatively compact form.
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Melth's Honor Run
This gives you a maximized challenge run on Honor mode - no sleep, no healing potions, etc
Basically Melth never sleeps, except when forced to, and can thus keep unique buffs up and a large army of summons to help out.
Unfortunately the run is currently still incomplete, with just having entered the third act. BUt that shouldnt be too big a problem.
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Both are designed for powergamers, but if you play the ironman mode, you are a powergamer.
