Pokemon Let’s Go, Pikachu! and Let’s Go, Eevee! represent the biggest departure from the series’ losing standing formula in over 20 years. The games, which go back to Kanto and are technically reimaginings of the beloved Yellow Version, have a lot of new stuff going on—for instance, you no longer battle wild Pokemon, you encounter them directly in the overworld, and then catch them Pokemon GO style. The game’s post-game has also been expanded immensely, now tasking you with finding and battling, and ultimately beating, 153 Master Trainers, one for each species of Pokemon that you can find in the game.
This guide focuses on those two things
MASTER TRAINERS
What are Master Trainers? Put simply, they are the ultimate trainer for a species of Pokemon. For instance, a Master Trainer for Pikachu is the ultimate Pikachu trainer in all of Kanto. Master Trainers are unlocked after you beat the Elite Four, and win the Pokemon League. There are 153 of them in the game (one each for the 151 Kanto Pokemon, plus one each for Meltan and its evolution). Beating them is ultimately the final way for you to prove that you are a Pokemon Master, with total and complete mastery over every species of Pokemon in the game.
But, like I said, there are 153 of them. How do you find them all? Where are they? The video below will help you find all of them. I will highly advise not watching it until you have beaten at least the Elite Four, just to avoid spoilers.
CATCH COMBOS
As mentioned previously, Let’s Go removes wild Pokemon battles. Instead, you encounter them in the overworld, and then catch them via a Pokemon GO style catching minigame. With this change comes a ripple effect of further changes to the game.
For instance, consider catch combos. These are simple—consecutively encountering and catching multiple Pokemon of the same species leads you into a catch combo. You only break the catch combo if you catch a different species of Pokemon—so, let’s assume you caught four Diglett, and then suddenly caught a Chansey. The Chansey breaks the catch combo you had going, and now you must start over. If the Pokemon runs away during the encounter, that also breaks the chain.
Catch combos have multiple benefits—you get EXP multipliers for catching Pokemon in a catch combo. Catch combos also increase your likelihood of finding a Pokemon with more perfect IVs (meaning higher stat totals), as well as the likelihood of you encountering a Shiny version of that species (meaning a rare, differently coloured variant).
Additionally, catch combos also mean you have more specimens of the same species in your Box- sending a lot of these to the Professor means you now get more stat boosting candies. Finally, having a catch combo chain going also means that rare Pokemon, such as Chansey, or the Kanto starters, are likelier to spawn.