Easier Credits:
To get easy credits, begin a game on the All-Star difficulty. In the middle of the game, change it to rookie, and the opposing team will now be on rookie difficulty, but you will still get credits for playing on All-star difficulty.

The NHL Hitz Icon:
Press B-Y-X to change the icons in order for the 1st to the 3rd boxes at the match-up screen. The numbers in the list below indicate the number of times each button is pressed. After the icons have been changed, press the analog stick in the indicated direction to enable the code. For example to enter 1-2-3 left, press A, Y(2 times), X(3 times), then left.

2-0-0 Right = Big Head Player 
3-0-0 Right = Huge Head Player 
2-2-0 Left = Big Head Team 
3-3-0 Left = Huge Head Team 
2-3-4 Down = Big Hitz 
3-2-1 Down = Late Hitz 
1-0-4 Right = Hitz Time 
2-1-0 Right = No Crowd 
4-2-3 Right = Pinball Boards 
1-0-1 Up = Show shot speed 
2-0-1 Up = Show the team's hot spot 
4-2-4 Down = No Fake Shots 
1-1-1 Down = No Puck Out 
2-1-3 Left = No One-Timers 
1-2-1 Up = Big puck 
3-2-1 Up = Huge puck 
2-1-2 Left = Bulldozer puck 
1-3-2 Down = Tennis Ball 
1-2-1 Left = Snow Mode 
1-4-1 Left = Rain Mode 
0-1-2 Right = Domino Effect 
0-0-2 Up = Turbo Boost 
4-1-3 Right = Unlimited turbo 
2-0-2 Left = Win fights for goals 
2-2-2 Down = Skills versus 
3-2-3 Left = First to 7 wins 
3-3-3 Right = More time to enter codes 
0-1-0 Down = Disable previous code