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