Teenage Mutant Ninja Turtles: Arcade Attack
Hard mode
Successfully complete the game to unlock the Hard difficulty.
Ninja mode
Successfully complete the game on the Hard difficulty to unlock the Ninja difficulty for purchase for 30,000 points.
Sensei mode
Successfully complete the game on the Ninja difficulty to unlock the Sensei difficulty for purchase for 50,000 points.
Survival mode
Successfully complete the game to unlock Survival mode.