Here is the full list of all 33 Chicory: A Colorful Tale achievements.
Collect all clothing items
Collect all decor
Pick up all litter
Destroyed the Brush.
Grew a brush
Discover all Brush Styles
Solve all of Oats' outfit riddles
Delivered all of Artichoke's mail
Deliver mail for Artichoke
Reveal 100% of the map
Painted your wielder self-portrait
Find all lost kids
Collect 50% of decor
Planted the Brushflowers
Solve the mystery of stolen furniture
Sang with Chicory
Shook Chicory's hand
Collect 50% of clothing items
Pick up 50% of litter
Started the Wielder Trials
Fill in Gelato's photo gallery
Complete all art classes
Met Queen Drosera
Collect 25% of decor
Reveal 50% of the map
Discover 50% of Brush Styles
Pick up 25% of litter
Chicory painted you
Collect 25% of clothing items
Return Beans' kids to her
Had a conversation with Chicory on the phone!
Met Chicory!
Pick up Chicory's brush