Have any of you ever played "Rocket Knight Adventures" on Sega Genesis by Konami? They have 4 difficulty settings.
"Hard" mode has the most challenge. You have to play through the whole game without getting hit once... 1 hit by anything, and I do mean anything... the game if 100% over (that is if you can find extra lives). How many of your tried? For me, it's pretty much IMPOSSIBLE to get through unless you're really good.