>>43289363I got to Elite Four battling only with Weedle in Leaf Green, and beat White with only Snivy without evolving it.
I got myself tempted to record it but these runs are slow as fuck, but they're fun in the sense you got to plan item usage and turn distribution carefully, specially when you're facing a gym leader with type advantage over your Pokemon.
Also, during the Elite Four challenge you got to pray for a critical hit to destroy your careful planning.