Here is the full list of all 24 RoboDo achievements.
Got 3 stars for the first time
Got 3 stars at all levels
Used only one bullet to complete Level
Completed chapter I
Completed chapter II
Completed chapter III
Completed chapter IV
Completed chapter I tutorial
Completed chapter III tutorial
Completed chapter IV tutorial
Completed level 1
Completed all levels
Completed all tutorials
Completed all chapters
Completed sp level 9 under 2 minutes
Completed chapter 1 without dying
Climbed high wall in level ? without dying
Reached the end at playground
Assisted a friend in level?
Completed chapter I in 24 hours
Successfully used a complicated lever system
Completed level with many launch pads
Completed level ? after dying 10 times
Completed chapter II tutorial