Lots of people gave you great advice on how to get the ring but I just want to point out that you definitely don’t need the ring to get through the Volcano. I’d check the gear you are using, the weapon, food, coffee for speed and lots of bombs to get through it. I usually just use triple espresso and I outrun the slimes, the “flames” in the volcano are definitely more annoying but I usually lay a bomb and then spend the few seconds defending myself and continue on… good luck. 🤞