Defeat the following characters to earn the badges.

Defeat Brock

Boulder Badge

Defeat Misty

Cascade Badge

Defeat Lt. Surge

Thunder Badge

Defeat Koga

Sould Badge

Defeat Erika

Rainbow Badge

Defeat Sabrina

Marsh Badge

Defeat Blaine

Volcano Badge

Defeat Giovanni

Earth Badge

Pokemon Puzzle League

---

Get Extra Hard Mode

Open the V-Hard mode by first picking your game and then in the Game Settings menu press and hold Z then press L, L, A, B 

OR you can finish the game using the Hard difficulty setting.

Super Hard Mode

At the game settings screen hold z and press L,R,A,B.

Get Mewtwo's Stage

Complete the game using the S-Hard difficulty OR go to the trainer select screen, HOLD Z then press B, Up, L, B, A, Start, A, Up, R.  Now player 2 will be mewtwo and the 1st player Ash

Get Marathon Mode

Go to the title screen and Hold Z then press B, A, L, L.  Now the speed can be set up to 99.  You can also use time zone and get 10,000 points to get this.

Get ?? Trainers

Unlock the ? trainers by holding L + Z + R on controller's 1 and 2 at the trainer screen.  You can also finish the spa service game to get this

Get Badges

Get the badges in bold by defeating the characters to the left

Brock	Boulder
Misty	Cascade
Lt. Surge	Thunder
Koga	Sould
Erika	Rainbow
Sabrina	Marsh
Blaine	Volcano
Giovanni	Earth

Unlock Options in Puzzle University

Go to the title screen and press and Hold Z then press A, B, R, A, A, B, R, A

How To Make Jigglypuff sing

Go To Marathon or Time Zone, and press L or R until the music CHANGES then press L or R once more and quickly get a combo or a chain.
This will get you somewhat more points.

Cheat mode
At the title screen, hold Z and press A, B, R, A(2), B, R, A to unlock all selections in the Puzzle University.

High speed marathon mode
At the title screen, hold Z and press B, A, L(2) to be able set the starting speed in marathon mode to a maximum of 99. Alternately, score at least ten thousand points in the time zone. -From: Michael Walker

Bonus trainers
At the trainer selection screen, hold L + R + Z on controller one and two to unlock the trainers marked by a "?". Alternately, successfully complete the Spa Service game. -From: Michael Walker

Mewtwo's stage
At the trainer selection screen, hold Z and press B, Up, L, B, A, Start, A, Up, R to start the game in Mewtwo's stage. Player one will be Ash, player two will be Mewtwo. Alternately, successfully complete the game on the S-Hard difficulty setting. -From: Michael Walker

V-Hard difficulty setting
At the difficulty selection screen, hold Z and press L(2), A, B to unlock the V-Hard difficulty setting. Alternately, successfully complete the game on the Hard difficulty setting. -From: Michael Walker

S-Hard difficulty setting
At the difficulty selection screen, hold Z and press R, L, A, B to unlock the S-Hard difficulty setting. Alternately, successfully complete the game on the V-Hard difficulty setting. -From: Michael Walker

Taunt opponent
Select any two player game mode. Have one player select a character, then repeatedly press A.

Badges
Defeat one of the following characters to earn the corresponding badge: Character - Badge
Brock - Boulder
Misty - Cascade
Lt. Surge - Thunder
Koga - Sould
Erika - Rainbow
Sabrina - Marsh
Blaine - Volcano
Giovanni - Earth