Depending on the selected difficulty level, the number of times that Snake will have to endure torture by electric shock is different, and Revolver Ocelot will have a different comment each time.

• Easy: 3 - "Had enough yet? We're not finished yet!"
• Normal: 4 - "You're still okay? Want me to go on? Can you take one more?"
• Hard: 5 - "Give up. Make it easy on yourself. One more time!"
• Extreme: 6 - "Come on! You don't want to die like this, do you? I can do this all day!"

This was changed in the Twin Snakes version to be 3 rounds, regardless of the difficulty setting.