You know, I really should pay attention to what I’ve already done, you know. I keep getting stuck as I reach somewhere, and then either die or thing “I need more potions and then I’ll come back”, and then forget where I’d been and assume it’s a dead-end on the map.
I did the same thing today, again, and as a result ended up exploring and doing other stuff, and ran out of places to go. Even though I knew there was somewhere else I had already been but not finished. Stupid.
Anyway, I also defeated Dario again today, and got the end credits. However, he clearly isn’t the end of game boss, and the game can be continued after him. I suspect I need the Soul that lets me enter mirrors, but I don’t actually know where that is.