In Dragonica, allow defeat to use his skills is the only way to defeat him, and immediately pounce on him once there is an opening, they got pretty low HP, and goes down in 4-5 combos from your Knight.
Openings that you can capitalize is when he uses Final Decision. If you are not mistaken, that because you can not recall. If that attack miss, it really leave himself open to a Cutdown just as he finished. The part is not sure about is whether you can use the Cutdown while he is spinning, caused you seem to recall being able to launch jester in the air straightaway when he misses the final decision attack with a cutdown.
Another opening is right after Upper Screwdriver, time your Shoulder Tackle right just before he lands, and you will be able to sneak in another Storm Blade. Once you get caught in their skills(Dragonica Gold) though, well, kinda game over for you, unless you got revenge on.
So, if it is a do or die fight with Jester, just make sure you don't get caught in the combo and you will do just fine. Have a good time with this game.
