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