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