What is left to do in Pokémon Let's Go Pikachu/Eevee?

So you finally did it. After beating all of the eight Gym Leaders of Kanto and putting an end the biggest criminal organization threatening the region you managed to beat the Elite Four and become the Champion. And now you must be wondering, what is left to do in Pokémon Let's Go Pikachu/Eevee?

1 - COMPLETE THE POKEDEX

This one is really obvious since it's the main goal of the game! Now that you're the champion you can finally enter the Cerulean Cave and capture the last two Pokémon missing from your Pokedex, Mewtwo, and the mighty Lickitung! But if completing the Dex is not your cup of tea you can always do some battling!

2 - RE-BATTLE TRAINERS

For the ones that really like battling there are a couple of trainers you can re-battle every single day. These trainers are the Elite Four, all the Gym Leaders excluding Giovanni that was replaced by Blue. Also, you can battle Green, after you've beaten her once, and Red as well, after you beat at least 6 Master Trainers. Red can be found at the Indigo Plateau!

3 - BEAT ALL THE MASTER TRAINERS 

Speaking of Master Trainers here's something that I have yet to complete. By now you should know that there are 153 trainers that focus on one Pokemon only. Their Pokémon are high-level and very strong, be sure to prepare yourself well or you won't be able to complete this task.

4 - SHINY HUNTING

I was never into shiny hunting but this game makes it so accessible that it is hard not enjoying it. If you have a catch combo of 31 combined with a shiny charm and a lure, the odds of finding a shiny Pokemon are 1/273. The odds may seem low but remember that in this game multiple Pokémon appear at once in the wild making it much more likely to run into a shiny. If you're a beginner I advise you to shiny hunt on the Viridian Forest first since there a ton of Pokémon there!

5 - BATTLE ONLINE

Your Pokémon are probably strong enough to shred through every in-game trainer but how about a real one? If you're up for a challenge I'd stay to give online battles a try, it's a great way to test your skills and know more about the competitive side of Pokemon. Also, if you have shinies it's a great way to show them off.

I'm sure there are a couple more things left to do in Pokémon Let's Go Pikachu/Eevee but these are the ones I've been doing specifically! Have you done any of these things already or are you doing something else? Let me know!