Cat Got Your Tongue
Next upBecome Guppy.
In one run, pick up 3 items or trinkets from the Guppy set (for example Guppy's Head, Guppy's Paw or Dead Cat). Isaac turns into Guppy.
The wiki's Guppy page lists the full set.
Achievement
Complete Cat Got Your Tongue (challenge #8).
In-game: “Unlocked a new item.”
Become Guppy.
In one run, pick up 3 items or trinkets from the Guppy set (for example Guppy's Head, Guppy's Paw or Dead Cat). Isaac turns into Guppy.
The wiki's Guppy page lists the full set.
Complete Cat Got Your Tongue (challenge #8).
After: Cat Got Your Tongue