>>54820865You're making a mountain out of a molehill.
>Stage 15 stops, 10 Pokemon, transfer 5
All easily doable in 5 minutes if you live in a city
>Stage 22 candy, 3 eggs, 10 great throws
Throws are easy, candy and eggs can take a while but Magikarp candy is 1km and easiest eggs are 2km each. So basically you need to walk 4km because stage one gives you an incubator for completion. That's doable in less than 1h.
>Stage 3Lv 15, 2 raids, 2 gyms
Lv 15 is doable in a day or two, others are easy
>Stage 4Kanto medal, evolve 20, 5 candy
5 km for Magikarp candy, evolving is easy after catching a bunch of bugs and shitmons for a few hours, Kanto medal can take a while considering that the game is no longer gen 1 exclusive, fair enough
>Stage 5Ditto, 10 ghosts, 20 throws
Ditto is the hard task as I said before.
>Stage 6Lv 25, evolve Magikarp, 10 raids
Lv 25 is doable within a week, Magikarp needs 400 candies but if he's walking with one since starting and catching Magikarp with Pinap berries, he should have near enough by this point. He can also use Defit easily to get the rest.
It's time consuming but not a massive grind. You can get the Mew in a week if you grind it out optimally, or in a month just playing the game casually for a few hours a week. depends solely on the rng for Kanto and Ditto spawns.