Beating the Developer in Hard Mode

I finished Candy Box 2, and then started on Hard Mode. The last thing I need to do is defeat the developer, but I'm having issues. The strategy I used in normal mode are not working for me in Hard Mode. I tried multiple Beserk potions, the BlackHole-Then-Run method, and even just brute force. He keeps killing me on the last bit of the second set of words. What strategy can I use here?

I used 5 pains au chocolat (2x power, 2x magic, 1x HP) already, and have the Scythe and the enchanted spoon. I have every other piece of inventory as well. What can I do?

My solution: I devoted 2 pains au chocolat to health (earning me a total of 672 HP), and the other 5 (I didn't cheat, but actually spent all the chocolate bars I could) to magic. I then brewed 2 turtle potions and a cloning potion. I wore red gloves, octopus crown with jaspers, and a scythe. I had the red shark fin, but none of the others. As soon as I entered the quest, I squeezed and cloned. Then, right before the first attack hit, I used a turtle potion. I waited until the second attack was about to hit, and cast black demons so that the developer would cast black hole. We both died at the same time, so I won.