Easy Level Up (Barbarian Boss):
to start sign into Xbox live. sign in the game go to Xbox live create a game. invite a buddy and choose the character u want to level up. u and your buddy go to the barbarian boss kill him save the girl and get your treasure. after the treasure you have to fight your friend. as soon as the battle starts go to the bottom left corner run straight at it and dive towards it using "Y" button. have your friend walk towards u and he will slowly start getting hit. if he moves the character the glitch will stop, but if he stays still then he will slowly die 1 hp at a time and while he's doing you will get 1 to 2 xp for each hit u can do this as may times as you like.