>>50104779Fun may very, but here are a few.
>Limited ShoppingOnly allowed to buy a select number of items in each pokemart. Usually I only choose a single PokeBall in these types of runs.
>No Healthcare RunNo use of the pokecenter. You can only heal your pokes with items in the menu. For best results, play in the Unova games.
>Low BSTSelf explanatory. Only use mons with a base stat total under a certain amount.
>No EvolutionDarwin is a bitch ass motherfucker and we're going to prove it by never evolving out pokemon.
>Use shit you've never used beforeNot really a challenge run so much as a way to spice up a second playthrough. Just use stuff that you wouldn't normally go for. Box your starter if necessary.
Hope that helps.