To the comment below me: By the time I've got enough materials for both the lighthouse and the light tower, the darkness has already swallowed almost half of the map and both structures don't reduce the darkness enough to have enough time to get more resources and activate the stone circle, at least that's my strategy that may not be as effective, but if you or someone else knew how to build a potions factory and how to do it would be very useful not only for me but for all those who struggle to earn the badge because I've searched and there doesn't seem to be a solid guide to the game anywhere.
Oh god please game creator reduce the difficult level of extended mode because thanks to this insane challenge i can't finish the Best Of 2018 quest and get the freaking kongpanion!!
 "Stop the Darkness"){kind=icon}