Go in the tunnel and there is a room in front, to the left or tothe right of you. Go in there and look for 2 black squares. You can go through them to gett between bases

Go to the huge white house and jump on to the back right window sill and turn to you're right. Then jump onto the shed. This may take awhile but it will pay off.

Enter this at the mission select screen for all:

missons:right,right,left,left,square,square.
Also hold select while doing this.

THIS CAN ONLY BE USED ONCE!!!!!!!

Go to the mission select menu, when there hold down shift and quickly press; right, right, left, left, square, square.

Unlock All Levels, And Bonus Features- Go to the Chapter Select Menu, and hold down the Select button, then using the D-Pad, hit: Right, Right, Left, Left, Square, Square. (DO THIS QUICKLY!)

Happy gaming =p

(GOT IT FIRST DAY OUT BABY WOOT!)