Non-lethal damage in License to Kill is a known glitch. This can occur if the hand or foot is struck. To prevent this, hackers set the License to Kill handicap setting to -1000.
License to Kill only applies to multiplayer games, but theoretically can be simulated using 007 settings by putting everything to 1000% except for the player's health. This would enable the guards to be more intelligent, tougher and have more health to defeat than in the regular three agent levels. The 007 Agent difficulty setting can only be enabled when every mission is completed on the other three difficulty settings. Agent, Secret Agent, 00 Agent.