Here is the full list of all 13 Needy Dragons achievements.
Started the game
Cessy always messes up
Cessy is a hardcore otaku
Cessy won't admit, but she likes that
Mueve is being fooled by her friends
Mueve misunderstood some ideas
Mueve gets philosophical
Tyrsia tries something inhuman
Tyrsia tries to bargain
Tyrsia won't give up easily...
Sport is healthy, or so they say
It can be funny, scary, and... random
Completed the game