2010 Halloween event

The 2010 Halloween event was released in October 2010 and features a Grim reaper hood for the reward. The event can be started by talking to Ali the Hag who is located in Trollheim or by entering the portal (located at the home spot, Varrock).

Walkthrough
Talk to Ali the Hag in Trollheim to start the quest. When you talk to her, she will give you a funigicide spray and fungicide. He will tell you to go to the Slayer Tower and collect 20 piles of fungi.

Fungi

 * Go outside of the slayer tower and follow the path and find the Zygomites. Use the fungicide spray on them.
 * After you get 20 piles of fungi, return to Ali.

Trollheim

 * Talk to Ali and she will give you fish food. Dip it into the fountain at the Draynor Manor.
 * After you dip the fish food into the fountain, you should get fish.

Finishing up

 * Return to Trollheim and speak to Ali to get your reward. Congratulations, quest complete!

Rewards

 * Grim reaper hood - You will receive after you finish the quest.
 * Fungicide spray - You will be able to keep the item after finishing the quest.
 * Fungicide - You will be able to keep the item after finishing the quest.
 * Fish food - You will receive another fish food after you finish the quest.