Here is the full list of all 20 Doodle God Blitz HD (Windows) achievements worth 200 gamerscore.
Episode Three passed
All drinks created
Episode Two passed
Similar elements reacted
Episode One passed without hints
Episode One passed
Human created
10 groups created
Element created 3 or more times
Life created
6 elements created
Episode Four passed
All Bad things created
All reactions revealed
Save the Princess quest passed
All reactions with Philosophers' stone discovered
Run, Santa, run quest completed
Sins vs. Virtues quest completed
Greatest Inventions quest completed
Survivor quest completed