From Press Release:
Frostfall has once again descended on Ramsgate. This year, Frostfall brings not only snow and tales of Silver Nikola, but three Frostfall contracts: free limited-time quests with special seasonal rewards.
Slayers can pick up the first contract today. Look for it in the in-game store (under the Event tab) and claim it to start your first contract quest. A second contract will be added on December 24, and a third will be available on December 26. Here’s the breakdown:
THE LIGHT KISS CONTRACT
When can I start it? December 17 to December 24
What do I get? Frostfall Mistletoe Lantern (lantern skin)
Who do I turn it in to? Arkan Drew
THE CAP AND TRADE CONTRACT
When can I start it? December 24 to December 26
What do I get? Watch Cap (helmet skin)
Who do I turn it in to? Admiral Janek Zai
THE SEATED SLAYER CONTRACT
When can I start it? December 26 to January 2
What do I get? Sit Cross-Legged (emote) and Sit Back (emote)
Who do I turn it in to? Xelya the Farslayer
Once you’ve completed a contract, simply turn it in to earn your reward. If you’re a Frostfall veteran and already own a contract’s reward, completing the quest will earn you platinum instead. Finally: The last day to complete your Frostfall contracts and claim your rewards is January 30. Be sure to do what you need before then!