Pokémon: Let’s Go, Pikachu! and Let’s Go, Eevee! will have a tough post-game challenge in the form of Master Trainers, said director Junichi Masuda in recent interviews. [Thanks, Polygon & Vandal!]

There are 151 Master Trainers total, and each of these trainers will focus on a specific species of Pokémon, such as Squirtle. By defeating them, you can get individual titles, such as ‘Master Trainer of Squirtle’. “Doing this 151 times is certainly a challenge”, said Masuda.

Pokémon: Let’s Go, Pikachu! and Eevee! will come to the Nintendo Switch on November 16, 2018.