Gotta catch 'em both! is an achievement that requires the player to find the hidden pets, Squeck and Ishhara, in Menaphos.
A corrupted egg can be found in either Menaphos or Sophanem which can be used to unlock the Ishhara pet.
A slimy egg can be found while fishing in Menaphos, either in the Port district or in the VIP skilling area. The egg can be used to unlock the Squeck pet.
- This achievement existed as a requirement for the Meta-phos achievement since 24 June 2019, however wasn't available as a separate achievement until one week later.
- This achievement and its name are a reference to the phrase "Gotta Catch 'Em All", a slogan from the Pokémon franchise.