Here is the full list of all 15 Kitty May Cry achievements.
Reach the backpack on the cliff
Wake up by Rack's Cabin
Complete Kitty's journey
Welcome to Seaside
Find the robots hidden in the tree
Catch the tram by the seaside
Beware! Don't get fried into a curly cat
Open the huge gate to Archipelago
Three travelers by the bonfire are distressed in Archipelago...
Light the huge bonfire
Reach the highest point of Archipelago
Collect 10 decorations
Obtain the Master Twig
Explore the power of dreams
Memories of the journey