2015 Hallowe'en event

Gauntlet of Souls is the 2015 Hallowe'en event, which focuses around a battle between Icthlarin and Amascut in the Grim Underworld. It began on 27 October at 0:00 UTC and lasts for two weeks. Players have to help Icthlarin guide souls across River Noumenon to the afterlife.

Players earn Noumenon Favour by gathering special and wayward souls around the river on a boat, as well as defeating the Avatar of Amascut.

Starting the event
The event can be started by entering the soul rift by Death near the Burthorpe lodestone. Once in the Underworld, Ka can be spoken to for further information about the event. She will explain that Icthlarin needs help gathering lost souls from the River Noumenon, which can be sailed across from either one of the two piers. Once 20 souls have been gathered they need escorting across the bridge, with the player's protection from Soul Devourers.

Pets and familiars are not allowed in the Underworld, and the lodestone network cannot be accessed from it. The Underworld can be exited by entering the beam just north of Ka.

Gathering lost souls
Wayward Souls can be gathered on the River Noumenon by embarking on one of the two jetties (located south-east and south-west of the bridge), to set off sailing on a boat. At least 20 souls must be gathered before they can be escorted across the bridge. Rescuing a soul awards 5 Noumenon favour each. The text at the top of the screen informs the player how much Noumenon favour they have, and how many more souls they have to rescue (as well as in the chat box).

Warning: The amount of souls gathered resets if the player goes to lobby or logs out.

Bubbling water may be found on the river. Searching it gives the player an Adventurer's chest, which can be opened for various rewards. Note that there is a time limit between searching for chests, as well as a limit of 5 per day.

Occasionally, special souls can spawn whilst rescuing a normal soul. These souls are gold in colour, and award experience in a specific skill. Each day there are 5 skills which they can award experience in, which can be checked at the Ferryman or Death.

Today's skills are: Attack, Divination, Dungeoneering, Ranged, and Strength

Escorting souls
Once at least 20 souls have been gathered, players can travel to the soul meeting point at the southern end of the bridge to guide the souls across it.

Throughout the bridge are several of Amascut's Soul Devourers. There are three waiting points across the bridge, at which the rescued souls will stop until 5 of the soul devourers have been defeated. Occasionally, souls are set free to wander the bridge if defeating the devourers is taking too long.

The canine-like soul devourers can be defeated by siphoning them with Divination, and the gorilla-like soul devourers can be defeated through the use of combat. Each devourer defeated rewards 5 Noumenon favour.

Once all three waiting points have been passed, the rescued souls travel over to Icthlarin to be escorted into the afterlife, granting a reward of 200 Noumenon favour.

Defeating Amascut's Avatar
Approximately every 15 minutes (starting from the last time it was defeated), the Avatar of Amascut, and Amascut herself, appear at the gates to the afterlife, on the northern end of the bridge. The avatar is level 112 with 850,000 life points, and attacks using Magic. A bar at the top shows how much health it has remaining.

Icthlarin helps the players to fight back against the avatar, but the four braziers around the area must be kept lit. Upon defeat, 350 Noumenon favour is awarded. A soul devourer death animation is also rewarded after the first time defeating it.

Ectofuntus
An Ectofuntus can be found at the southern end of the Underworld, alongside Necrovarus. A bone grinder can be found to the west of it, and a pool of slime can be found to the south-east, for buckets of ectoplasm.

Note: The buckets of ectoplasm gathered in the Underworld only work with the River Noumenon ectofuntus.

Rewards
Rewards are bought for Noumenon favour from Sinn Derkwill.

A soul devourer death animation is rewarded after the first time the player defeats the Avatar of Amascut. It can be used to override any current death animations by talking to Death in his office.

Treasure Hunter
During the event, there will also be a Halloween-themed Treasure Hunter promotion occurring.

Music unlocked

 * Amascut the Devourer
 * Icthlarin's Little Helper

Trivia

 * The idea for the event originated as the May 2015 winner of RuneLabs.