Fair enough xD
Seems you're a Challenge Maniac, just like me xD I got 2 ultimate monotypes in progress, 2 time warps, 1 baby pokemon, 1 eeveelutions, 2 location, 1 form-ulated, 1 legendary trio, 1 anime manga, 1 ones that got away, 1 roll your monotheme, 1 random pokemon challenge and a first badge one xD in progress @w@
I know I'm shamefully advertising again, but, since you want a difficult challenge why not take the baby pokémon one?
I've had people complain it was too difficult before >.>
And well, I'm playing on SoulSilver with a full team of 6. And I must say, there is quite some difficulty in it.