Squirrel is one of the five skins released in the Pan-Demonium part of the Autumn offer. It could be purchased on an individual basis with game coins in September 2016.
Squirrel could be purchased in the Skins Shop under the 'Autumn' tab for 490 coins. It is the least expensive skin in this offer. This skin was available for a limited time and may not be available for purchase in the future.
Details of this skin can vary depending on location, platform or time.
Note: The Pan-Demonium part of the Autumn offer was released again for a limited time in September 2022. The price for Squirrel remained at 490 coins for this release.