Will Halloween continue for another 2 weeks?
From the patch notes
“The Blood and Madness content will be available from October 15 to November 11, including rewards and achievements. The only exception is the A Royal Tradition achievement, which can only be completed when Mad King Thorn visits Lion’s Arch.”
So, we get a pretty decent amount of time for Halloween – longer than the 2 weeks a latter half of month update usually gives.