Full Shield & Attack  -  Highlight “New Game” at the main menu and enter this code: Triangle, Square, Triangle, Square (x2), Up (x3). A tone confirms correct entry. 

Invincibility  -  Highlight “New Game” at the main menu and enter this code: Up (x3), Circle, Square, Up, Right, Left. A tone confirms correct entry. 

Level Select  -  Highlight “New Game” at the main menu and enter this code: Triangle, Square, Circle, Triangle, Square, Up, Up, Up. A tone confirms correct entry. 

Secret Room  -  In the level "The Labaryth" just as you are about to go into the room to save Xena's friend take a right. There will be a series of halls. Follow them to the end. There should be some health potion and a torch on the wall. Walk through the wall into a computer lab. How'd that get there? 

Xena's Moves:-

WINDMILL PUNCH: Hit punch and the kick button at the same time to do her windmill punch. (keep hitting it to last longer) You can control which way she moves by pressing up down left and right.
RUNNING SWEEP: Have Xena run and hit the punch button and she will give a low sweep. (works best on the amazons)
LOW HIT: While blocking hit the x button and she will kick people in a very bad place that will disable her enemy (mainly on men)
AIR KICK: While blocking, hit the kick button and Xena will do a spinning air kick that will throw her enemies off of her.
ACROBATICS: While blocking you can get Xena to do flips and cartwheels. When you block hit the directional pad. RIGHT for a right cartwheel, LEFT for a left cartwheel, or DOWN for a backwards flip