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