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.
All Bad things created
Run, Santa, run quest completed
Episode Three passed
Alle drankjes aangemaakt
Games created
Episode Two passed
Episode One passed
Human created
10 groups created
Similar elements reacted
Life created
Element created 3 or more times
6 elements created
Episode Four passed
Episode One passed without hints
Save the Princess quest passed
All episodes passed without hints
Sins vs. Virtues quest completed
Greatest Inventions quest completed
Survivor quest completed
All reactions revealed
All reactions with Philosophers' stone discovered