To deafeat the Final Boss: Phase #1. Press the button when you're fighting him.
Phase #2. Just hide behind the castle wall, but when he asks you to come out, don't. he'll trick you, hide behind the castle walls until he is deafeated.
Guys, are you a total idiot on the tutorial, look at the it was written and then do what it says, simple and easy, how could you get stuck on such thing like that?
Walkthrough for the Pie (Best) Ending!
When you start off. There will be 2 decisions you can start off with, go to the nearby town or fight a goblin. Kill the goblin it'll drop 3GP, go to town.
You're at the town and you're broke, whine about it that you're broke and you'll recieve 15GP. Okay, go to the shop. Don't buy any sword.
Okay, you're in the field now, you see a bunny. Keep waiting until you recieve 5GP.
Now, you're in the forest. Go North to find the Corn-Reaper boss. Jump once, then again, then slash him! He drops 15GP. Woah, now the real Reaper appears and went to the Temple of Curse.
When you're in the Temple shop, you should have 38Gp. Buy the Black Sword and prepare yourself for the Reaper. Once you've deafeated the Reaper, leave the sword. After a few of the messages appear, there should be a crack in the wall, hit it with the Black Sword and you'll find the True Sword you're finding! You Win!