The RuneScape Halloween event 2013 is different from previous events. Instead of being it's own seperate event, it consists of going to the Lumbridge crater and rebuilding buildings that were destroyed by the warring god factions in summer of 2013, in the battle of Lumbridge.
RuneScape players have to gather and contribute resources that are used in the rebuilding of the area. Different resources can be gathered from different locations.
RuneScape players can get up to 1,500 points per day. That is sufficient amount to purchase a large experience lamp.
Explorer Jack's helmet, the archetect emote, and the builder title are unlocked through advancing and rebuilding the buildings.
This RuneScape Halloween event does not give any Halloween specific rewards or themes, but talking to Foreman George unlocks any emotes from past Halloween events that aren't yet unlocked.