Here is the full list of all 42 Shu achievements.
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
Outrun the Storm without dying
Complete World 2
Died more than 10 times on the same level
Leap out of Okoro water at the last second
Collect 20 Butterflies without landing
Collect a Mural Piece
Complete World 1
Took over 8 minutes to finish a level
Complete a level without dying
Glide for a total of 100 seconds
Chain 3 airstreams together in a row
Save your first Babby
Obtain a gold butterfly medal on any level
Complete the first level
Beat one of Goo Shu's top times
Save all Babbies in one world
Complete a world without dying
Visit all of Bryn's corners
Don't get struck by lightning
Replay any level more than twice
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
Beat Goo Shu's Tower Time
Slow down time and dash to past the finish line
Obtain all gold butterfly medals
100% all levels
Obtain a gold butterfly medal on any world 6 level
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