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