You'll want to keep a really close eye on the combat timing here since honour mode's truly brutal with the permadeath mechanics. The moment your party wipes, that's it - campaign over and you'll need to start fresh. Watch for the enhanced boss patterns, particularly when ketheric or raphael telegraph their legendary actions - they'll have this slight pause before unleashing devastating combos, so positioning is absolutely critical.

The netherbrain fight deserves special mention since you actually need to defeat it properly to unlock foehammer - trying to cheese with gale's explosion won't work here. Keep your spacing tight and watch for the phase transitions, especially when it starts cycling through different attack patterns. Only about 0.1% of players have managed to complete this, so don't get discouraged if it takes multiple attempts.

Good to know about the golden d20 reward - there's currently an issue where it might not trigger properly. If you run into this, some players have found success by manipulating their save files, but maybe wait for an official fix if you're not comfortable with that kind of workaround.