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

[sergiodaly]

trophies do that for me... i dont play RPGs so its just dificult settings and some in-game challenges i come up with but not major things that makes me play trough the entire game very different from what i would normally do.

some times i like to play KZ2/3 or battlefield BC2 just with hand guns in on-line rounds just for fun...