Here is the full list of all 22 Doodle God achievements. It takes around 4-5 hours to unlock all of the achievements on Windows.
Episode Three passed
Episode Four passed
Games created
All Bad things created
Episode Two passed
Alle drankjes aangemaakt
Episode One passed
Similar elements reacted
6 elements created
10 groups created
Life created
Human created
Element created 3 or more times
Episode One passed without hints
Save the Princess quest passed
All episodes passed without hints
Run, Santa, run quest completed
Sins vs. Virtues quest completed
Greatest Inventions quest completed
Survivor quest completed
All reactions revealed
All reactions with Philosophers' stone discovered