Has anyone ever attempted a self imposed challenge when playing a game?

[postofficebuddy]

Not so much a self-imposed challenge as me being rather cheap, but I got the Blazblue Continuum Shift platinum without picking up any of the DLC characters. The primary challenge of the plat is completing 100 combo challenges across all characters. If you have the DLC its basically an easy 20 challenges or so. Without the DLC its significantly harder.