When you login you will see this screen that pops up:
Those little green candies floating like ghost you're going to want to collect them by clicking on them:
After you collect all 3 candies Gary will pop back up with a new message:
After you collect the items hit ''ok'' and Gary will come up with a new task for you, for this you're going to want to go to the Mine Shack:
Once again you're going to want to click on the purple floating candies:
Once you're done Gary will pop-up with an another message for you to collect your items:
After that there will be no more task to obtain until Oct. 4, until then penguins I'll be signing off for now! Happy Halloween!
-Baku988