This is a page describing a single quest in detail, and thus it may (and probably will) reveal plot or quest details. Spoilers will not be hidden from view. For a spoiler-free description of the quest (including difficulty and prerequisites), go here.
It's always been rumoured that the forest east of Durnsig is haunted -- long ago cursed by an evil warlock now many centuries deceased. And let's face it, the sudden appearance of an impossibly large and tangled pumpkin patch on the edge of the wood isn't helping its reputation any...
The dungeon is a simple, winding path with fights at set places. You can see the battle difficulties below the map. Several battles will open extra corridors to allow faster access to the rest spot at the start of the maze.
All enemies are 3+ at MR 63.
At the end you will find the Massive Pumpkin Beast (9+ at MR 35 Exact, 250 SP). You will need to make a Randomcheck (1-100 + Agility * 2 + Luck * 1). 70 or more needed to pass to avoid Pumpkin Beast's fire breath. You lose approximately 37-43 SP if you fail, so make sure you heal afterwards.
On your FIRST attempt, if you use Fortification/Elementalism 40+ vs the Pumpkin Beast's breath, you get 4 XP. You don't receive it again even if you retry after you quit without saving, etc. This is a minor bug created when the GM changed the scenario to address an abusable bug.
Around 345-350 combat experience for fights with the tangled vines and pumpkin warriors
65-66 experience for the combat with the massive Pumpkin Beast.
Armour - MR/SP Balance: Dragonwing Breastplate (+3 MR, +16 SP) or Warlord's Helm (+5 MR, +10 SP) are generally accepted as the best options in terms of MR/SP balance. However, you should check comparable pieces at Tallys:
Breastplates: Jadefang Breastplate (I) (64 AT, +2 MR, +13 SP), Jadefang Breastplate (II) (76 AT, +2 MR, +15 SP), Jadefang Breastplate (III) (112 AT, +2 MR, +17 SP). The main advantage of the breastplate is also MR, but the cost of comparable Tallys pieces is reasonably affordable with in-game AT. On the other hand, there are fewer interesting pieces of Torso armour in the game, while there are several very useful headgear pieces you might want to swap the helm to.
Helms: Ravenlord Helm (108 AT, +1 MR, +17 SP) and Dragongem Helm (136 AT, +4 MR, +17 SP). The main advantage of the helm is its relatively high MR value. Its comparable Tallys counterparts are also more expensive than the breastplate's. However, it will lack on SP on higher levels and as mentioned, there are other "free" headgear pieces you may want to swap the helm to.
You should also consider whether you have plans to donate for AT. If you're going to, having more AT available for item upgrades will (relatively) diminish the value of these items.
Extra AT: Since better items are available in Tallys shelves, you may consider getting Varkyn's Trick Ring for an AT boost. If you plan to donate, this option becomes stronger too.
From the depths of the Neverness springs this wicked iron staff. Created for a demon prince, the true extent of this weapon's malevolent power can only be guessed at. This weapon is of magical quality.
This wicked, black steel weapon once straddled the hip of the three-headed demon lord, Jhaloth. How it is now the property of the puny mortal known as (Your Name Here) is a matter beyond all comprehension. This weapon is of magical quality.
All of the reward items were originally available from the limited-time Tears of Igranolt event, and later Hunt for the Phantom Assassin special event, back in time when they were a special part of Exploring the realms at random (September 2006). They were available for a couple of months. During that time, several players managed, though extensive grinding, to get more than one. See Explore the realms at random's historical section for details. A Haunting in Durnsig was released in November 11th 2006 as a means to allow all players a chance to get one of these items.
Initially, the final reward was randomly selected when you defeated the passive pumpkin beast, and you received it in its unidentified form. There used to be a SAFE spot at the entrance to the maze, so players could save at the SAFE spot after clearing the dungeon and replay the final encounter until they got the reward they wanted.
For a long time the final item reward was 'locked' in a 90-minute cycle. The reward item was randomly chosen every 90 minutes and the same item would be dropped by the Pumpkin Beast within those 90 minutes. When the cycle ended, it was even possible that the same item would get chosen again, locking that item for an additional 90 minutes. If you wanted to get the best items, you often had to be VERY patient as it could take days for the desired item to come up. This was changed at an unknown date around the first half of 2010.