LogFAQs > #933217859

Mega Man Battle Network 3 Blue/White - Having to find the Iceball M battle chip for the kid in the hospital. The virus that drops this chip is rare to find even with the appropriate navi cutomizer parts. You might not even get the battle chip after beating it too.

Mega Man Zero - Disabling the bombs at the factory. There's a leap of faith section over a bottomless pit with moving platforms.

Call of Duty Black Ops - Kicking the barrels in the mission S.O.G. on veteran difficulty. Good fucking luck

Mario Kart Wii - Unlocking 3 Stars in every prix. Not only do you have to get 1st place every race, but you also have to drive perfectly (like no off-roading and hitting walls) and never drop out of first place at any point during the prix.