Weapons and armor
Farm Glitterhelm Caverns on Insane
A repeatable campaign clear can replace early equipment and provide saleable drops while progressing toward later maps.
Glitterhelm Caverns campaign, on Insane once your build can complete it consistently.
Repeat the campaign clear while it produces upgrades or useful sale proceeds; each run offers a new set of drops, not a guaranteed specific item.
Switch to a harder map or difficulty when you finish Insane consistently and the drops no longer improve your active heroes.
Open a guide to find other locations and see what the item is used for.
A repeatable campaign clear can replace early equipment and provide saleable drops while progressing toward later maps.