Rampage: Total Destruction

Bubba:
Unlock the other 29 monsters.

Eyegore:
Successfully complete the game with the "All Challenges Met" award for all cities.

Philbert:
Successfully complete the game with the "Par Scores Met" award for all cities.

Other hidden monsters:
The following monsters are hidden in a block in a city. Use the indicated monster to destroy blocks in the city until the bonus monster is unlocked.

Leon: Vegas, play as any starting monster.
Kingston: Vegas, play as Lizzie.
Jack: Vegas, play as Harry.
Marco: San Francisco, play as Ralph.
Shelby: San Francisco, play as Lizzie.
Natalie: San Francisco, play as Marco.
Kyle: London, play as Kingston.
Icky: London, play as Ralph.
Edwin: London, play as Wally.
Cal: Los Angeles, play as Kyle.
Amanda: Los Angeles, play as Kyle.
Bart: Los Angeles, play as Kingston
Rojo: Chicago, play as Kyle.
Harry: Chicago, play as Marco.
Nick: Chicago, play as Harry.
Croc: Hong Kong, play as Rojo.
Venus: Hong Kong, play as Croc.
Jill: Hong Kong, play as Amanda.
Wally: New York, play as Marco.
Rocky: New York, play as Cal.
Joe: New York, play as Natalie.

Control loading screen:
Press any button while game is loading. The monster you selected will make funny noises.

Hint: Automatic monster unlocking:
Allow the game to begin demo mode and have it auto-play. Any monsters unlocked by the CPU during demo mode will remain unlocked for your game.

Hint: Instantly destroy buildings:
Pick up a gasoline truck and throw it at a building. It will begin to collapse no matter how much its health was.

Hint: Monster's unique abilities:
Some monsters have unique abilities. For example, Philbert can eat anything, Bart can fly, and Rojo can build up speed while running.

Hint: Change billboards:
Go to a billboard on a roof and kick it to change it to a funnier version. For example, in Las Vegas with the large slot machine there is a "Beauty's Only Skin Deep" billboard. Kick the woman in the face to see the girl from The Exorcist.

Hint: No police:
If a policeman is bothering you, lure him away from his vehicle and eliminate him (kick, eat, grab and jump, ground smash, etc.). Never destroy his car, and no more police officers will arrive(excluding S.W.A.T., or army tanks).

Hint: Unique item effects:

Bananas: Good for George
Chili Peppers: Good for Nick
Fire: Good for Nick
Poison: Good for kingston
Steak: Hurts Rojo
Water: Venus can drink water from pipe leaks. Gilman is immune to water leaks.

Hint: More sound effects:
In two player mode, pause game play with player two's controller. Every time you try to select "Options", you will hear sound effects.