Here is the full list of all 42 Shu achievements.
Obtain a gold butterfly medal on any world 6 level
Beat one of Goo Shu's top times
Save all Babbies in one world
Replay any level more than twice
Complete the game
Get killed by a time slowed hazard
Meet all of the Villagers
Smash through a pane of glass with Lombo in both directions
Complete World 4
Complete World 3
Complete World 2
Chain 3 airstreams together in a row
Collect 20 Butterflies without landing
Leap out of Okoro water at the last second
Complete World 1
Died more than 10 times on the same level
Collect a Mural Piece
Complete a level without dying
Save your first Babby
Obtain a gold butterfly medal on any level
Complete the first level
Took over 8 minutes to finish a level
Glide for a total of 100 seconds
Complete a world without dying
Visit all of Bryn's corners
Don't get struck by lightning
Collect all Mural Pieces
Set a time on all levels
Ride the bull without dying
Avoid the airstream death trap in "Breathless at the Precipice"
Save all Babbies
Obtain "No Deaths" badge for all levels
Outrun the Storm without dying
Beat Goo Shu's Tower Time
Slow down time and dash to past the finish line
Obtain all gold butterfly medals
100% all levels
Complete World 6
100% all World 6 Levels
Obtain a no deaths medal on any world 6 level
Save all Babbies in any world 6 level
Beat the Goo Shu time on all levels