>>37932304By then you can get
>mega kick/mega punch on a high ATK pokemon>Rattata with Hyper Fang>Beedrill with twineedle to fuck Starmie's psychic typing>a Pikachu which is available in every version of gen 1>Paras with bug/grass to double fuck Starmie>Jigglypuff with its powerful status effect moves+disable+access to mega kick>just power level anything that isn't weak to waterPlus there's lots of trainers beforehand to level off of. I'm sure there's more strats than that but it was never hard