Have you tried just using the third attack? I forget what it's called but it should do the highest damage it was like light blue in color.
huh I somehow legit beat the game just with one attack. Maybe start with a new save file?
When you go to the witch's hut in the desert she can get you up to 4 in every element. BUT you need tentacle cum or juice to do it, so just submit until you get what you need and then go to the witch after
