Dungeon crawl mode is complicated, it tells me to sell equipment at city by clicking them, but they only get deleted from list, i dont get or lose any gold, and nothing changes on adventurer
Oh and i found something i call "scrambling". When you find an item while searching (the 1 AP option at inn) which you dont like, you can go to title menu without saving and load your save file, and search again for a better item. You can do it as much as you want, thats how i made my weapon, its very helpful and also works for bonus protection from prayer and gold recieved from eggs :D
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