The strategy has been to save all upgrades for the first tier 5 weapon, then use Twin Upgrades and Swift equip to enjoy a variety of weapons.
Somehow I cannot manage “On Diet” challenge with duelist, I might need a lucky start for it.
Elemental Blast is very cool too, I love its crowd control effects like blasting many baddies around with that elastic shield. I forgot to use it on Yog where it would have really shined!
Great work. On diet requires fairly quick exploration if you don’t have some form of sustain. As a Huntress player, I do this with dew, but I will mention one of the best things you can get is a RoH. Fewer turns spent on movement drastically cuts down on how quickly you get hungry per explored area. And of course the classic not getting hurt -> can starve longer