Here is the full list of all 43 Promenade achievements worth 1,000 gamerscore.
Collect all cogs in Promenade's world
Find the secret at the bottom of the Great Elevator
Find the secret on the distant island
Find the secret at the top of the gigantrees
Find the secret in the concealed house
Find the secret hidden in the hull
Find the secret in the cold grotto
Sit on the throne on top of the world
Contemplate your kingdom
Let your royal thoughts drift away
Complete the Promenade
It means a lot to us that you explored every corner of the world! Big hugs from the Holy Cap Team
Beat all the OctoRetro minigames in hard mode
Beat all the time trials in "The Source"
Get your health points back by taking a nap in a hammock
Steal the moles' treasure without having to sneak-by
Beat Promenade in 2 hours and 30 minutes or less
Pester a defenseless little bunny
Sorry, we didn't program any egg based recipe
Bring out the artist in you
Bounce on a chicken, again and again... and again...
Find the way to hug your poulp anytime you want
Take a nap next to the chillest of crabs
Try to create a paradox in "Mr Boss's lair"
Collect at least 26 cog fragments before acquiring the Omnihook
Assemble your first cog
Overcome the sanctuary's test and claim the power of the Omnihook
Overcome the sanctuary's test and claim the power of the Omnibag
Complete the trial "Swift movement expertise"
Complete the trial "SlingHop expertise"
Professor flavor soup?
Rest for 5 minutes in total in the hammocks
Beat Dashton in all the rematch races
Climb the mountain without falling
Jump in the level "Ridge ramble" from the elevator without touching the ground
Scare away the tiny white bird in the Great Elevator
Enter the spaceship before acquiring the Omnihook
Beat a developper time in a time trial (without using objects from outside)
Beat ALL the developper times in the time trials
Beat the "Comedian's lair" without taking damage
Pester the bazoocrab
Bounce on Lewis's bed
Cause 5 citizens of the "Mr Boss's lair" to panic at the same time