Board Thread:Game Discussion/@comment-82.132.213.190-20180724152034/@comment-32545704-20180724152655

It's a special event so it depends on your skill how much you will need to spend. But no one has reached the last stages yet so it is not easy to give a definite answer. Check the event page to see the latest tips in the comments, look on the menu at the top under "New" and you should find the Carbon Copy page.