I'm not quite sure what you were going for, but this is no secret, hitting the kamidogu, do temporaily stun the Onaga. If you're thinking Shujinko is like Shang Tsung, you can forget that as well. You'll find that only during Konquest Shujinko is granted those "powers", not when you are playing as him in Arcade mode...Though you do get a majority of the other charactors special moves.

wtf? Since this thread is so very useful, i'm gonna add a secret of my own:
Play MK Deception Arcade Mode:
First, get a job or if you already have one save enough money to purchase Mortal Kombat: Deception from your local retailer. Then, bring the game home and unwrap it. Open the box and CAREFULLY remove the game from its case. Put it in your PS2/XBox and wait. When the game loads up, create a profile and save it. For effect, name it MKDPLAYER12312491211 since that will make you sound awesome. Watch the intro, and then, while standing on one foot, put your left hand on top of your head and count to 10 like this "One-one thousand, 2-one thousand, 3-one thousand,...10". If you did it correctly, press x at the 'Kombat' option on the main menu screen, but make sure you do this AFTER you go into 'Options' and set them to how you want, and after you ahve put in your unique profile code. Then, go to 'Kombat', pick 'Arcade'. And there you go!

I think he was only trying to help, maybe he had no idea about it. No need to get upset.

OMG!! Thank you, i dint know that! I could never beat the dragon king, and now thanks to your superior smarts, i'am going to beat the DK now that i know the secret. MUHAHAHAHAHAH
'geez"