Unlock All Extras:
Enter the classic Konami Code at the title screen to unlock all of the Cool Stuff without having to complete the game with everyone. The code is: : UP(2), DOWN(2), LEFT, RIGHT, LEFT, RIGHT, B, A.
"Excellent" (30) - Complete the game on Expert difficulty in individual Quarters mode.
Battling Seizure Robots (10) - Playing from stage 1, defeat the battling robot.
Best Score Ever (25) - Earn 250 points (US) or 25,000 points (Japan) in a game.
Bongo's Angst (10) - Playing from stage 1, get Bongo to appear in 4 different levels.
Dysfunctional Family (10) - Play in a 4-player match with three other people.
Easier Than Arm Wrestling (10) - Defeat the Wrestler without any player dying.
Falling For Smithers (10) - Playing from stage 1, fall through the deck after Smithers.
Helper Monkey (10) - While performing a Team Attack, damage 25 enemies.
It Tastes Like Burning (10) - Hurt Smithers with one of his own bombs.
Like Taking Candy From a Baby (25) - Complete the game four times, once with each character.
Mr. Sparkle (25) - From stage 1, make it to the stage 3 bosses in Survival Mode with the Japanese ROM.
Release The Hounds (25) - Complete the game in 30 minutes or less.