Earn a Gold medal in the "Arena Del Toro" and "Getting Tanked!" levels.
Earn a Silver medal in the "Ay Mama!", "Carne Cesar", "Rooftop Ferno", "Abandon Ship!", "Nice Wheels", "Supervilla!", "The Hacienda", "The Jungle", and "Ultimate Underworld!" levels.
Increased health and combo time
Earn a Bronze medal on a level.
Infinite Ammo
Finish a stage while keeping your combo meter from reaching zero. You'll unlock a "chili" at the end of the stage which will get you infinite ammo on a certain weapon.
It's recommended to get Bronze medals on the stages too, which will increase your health and combo time.
Effect - Code
Infinite AK-47 - chili on "Need a Ride" stage
Infinite Combat Shotgun (Spaz) - chili on "Ay Mama" stage
Infinite Grenade Launcher - chili on "Arena Del Toro" stage
Infinite Heavy Handgun (Python) - chili on "Mucho Manure" stage
Infinite Heavy Machine gun - chili on "Los Toros" stage
Infinite Hunting Rifle - chili on "Cargo Chaos" stage
Infinite M-16 - chili on "Rooftop Inferno" stage
Infinite Rifle - chili on "Something Rotten" stage
Infinite Rochet Launcher - chili on Final Mission stage
Infinite Shotgun - chili on "Abandon Ship" stage
Infinite Submachine Gun (Uzi) - chili on "Nice Wheels" stage
Invincibility
Create a new Profile and type ERNESTO as your name.
Skip Level with Gold Rank
During Gameplay, press X, Square, Triangle, Circle, then Select. You'll skip the level and complete it's challenge with a Gold Rank.