Hello Marscpg:
Thank you for getting to the near end of my game. Thank you also for the kind words on my puzzle game as I really appreciate seeing all comments that come to any game of mine.
The archbishop I'll admit is tricky. In order to attack properly, you must be 2 spaces away (or 1 empty space between you an the enemy) to register a hit with the space/action button. If you press the action button when you are RIGHT NEXT to the enemy, he will hit you. The archbishop is also very fast and each heart needs 2 hits to reduce his health. He will also insta-kill you if the archbishop corners you to the wall. All hope is not lost.
To defeat the archbishop, you must keep on circling him so that you can steal a hit when you are 2 spaces away from him. Also notice that he moves slowly in the beginning of the battle. Use that opportunity to hit him about 4 to 6 times at the start of the battle. Then be prepared to circle him, keep your distance, steal hits, have fun in mid-battle, then finish him off. His slowness at the end of the mid-battle (his overconfidence) will finish him off.
Let me know if you are successful or need more help. I could make a video if you need video walkthrough on beating him. (remember the 2 space rule for any future battles.) Again, thank you for playing my game as it puts a smile on my face and encourages me to keep making games.