Leveling chalenges 4 fun

Hi, im new to the server and was wondering if there is any type of "trend" challenge (like ironman challenge) for character leveling and if there is any abbreviation that i can use on my nickname to kinda flag a character that is on the challenge.

And if there is not..

I would like to see what others think about subjecting themselves to some of those like:

Only learn a maximum number of skills, making them "signature skills" (like 6 skills maximum)
Not using above uncommon or common quality items.
Build only stupid off-meta builds.

I know most people usually find this stupid and a waste of time but some dont, so if there is anyone interested on doing that kind of stuff, show yourself, let's think of a way of identying ourselves on game. :p