Here is the full list of all 50 Save me Mr Tako: Tasukete Tako-San achievements.
Complete the first act of the game
Complete the second act of the game
Complete the third act of the game
Beat the game. Thanks for playing!
Beat the game with 100% completion
Beat the game without seeing the Game Over screen
Obtain your first hat!
Find half of the hats of the game!
Find all 50 hats in the game!
Save all children
Find the cave behind the waterfall
Discover the secret of the great temple
Locate the hidden room in the tower
What's in the Ydor Temple pipes?
Find a room hidden within the Catacombs
Revisit Enkidd's past
Remember Baby Tako & Bako
Witness Sam's tragic end
View Bako escape Sarona with Lalabichoua
Recall Mireille and Eos
Find the princess back in the ruins
Come back to see the princess' secret base
Help construct a new town
Reach 50 fans!
Beat all the bosses consecutively in Boss Mode
She escaped!
Find the mermaid cave
Become the hero of the Mimiga!
Find the lost kids on Alpha Island
Meet the King of Cats
Experience death by chicken
Master the crab minigame
Become a Takoyaki master (but don't tell anyone!)
Rise through the ranks of the fight club!
Master the dancing minigame. A star is born!
Melt the snowman
Destroy the house of the rich octopus
Talk to the drag queen in Ydor with your fabulous wig
Chase 42 birds
View the puppy flashback
You've met a terrible fate, haven't you?
Find a legendary artifact from the past!
Your name is written on it...
???
Find the final resting place of the legendary octopuses from the past.
Find Owlboy
Find the fox from Seasons After Fall fox
Find Shovel Knight
Find Dropsy
Find Baguette (by Kekeflipnote)