Here is the full list of all 16 A dead world's dream achievements.
Don't jump, friend
Collect all rare species
Find a breath power-up
Find him and learn a tip or two
Find all life power-ups
Finish the game
Finish hard mode with 100%
Find all energy cubes
Finish the game in less than 45 minutes
Finish the game with 100% in less than 90 minutes
Don't stay too long
Cool down a little
It stings
Finish puzzle game mode
Finish 4 archives
Finish the game in less than 17 minutes