Bright Sword Quest

Name: Bright Sword Quest.
Location: Outlaw Camp
Reward: Bright Sword, Red Gem.
Required level: 45.
Monsters: Wild Warrior, Ghoul, Beholder, Orc Berserker, Demon Skeleton, Giant Spider.

Spoiler:

Requirements:

Rope
Shovel
Barrel (found at Outlaw Camp)
Power Ring
3 Parcels or knowledge of the levitation spell

Description:

First, you need to get three keys (Key 3301, Key 3302, Key 3303) marked on the map above. You can find each of them in a dead tree.
Now head to the hole marked A on the map above (it's hidden behind a tree) and go through the tunnel like this:

After going down the ladder and reaching the locked door, open it with the Key 3303, then pull the lever:

There you will find a chest hidden behind the oven. If you moved the lever correctly, there should be enough space to enter and from the chest take the Key 3304:

Time to use the Barrel. You'll find the closest one at Outlaw Camp next to the cottage, but if it was bought from the store you'll need to unpack it, and this is only possible at the cottage (you can then go to the nearest houses and find an open door. Put your package in them and use it to get the Barrel). Go with it to the place marked B.
Go down two levels and in a small room place the Barrel on the northwesternmost field:

Now go to the ruins (next to which the Key 3302 was located), climb to the top of them and through the hole in the upper right corner enter the underground. 2 Giant Spiders are waiting there. Go through the tunnel:

You must use the levitate or Parcel spell to go down the level below, as you can see Orc Berserkers are waiting there.

There you will find a lever and a table. Place the Power Ring on the table and then pull the lever. This will cause the wall in the corridor next to it to disappear, so you can go that way (if it doesn't, repeat the operations with the 2nd Power Ring), with an Orc Shaman and a few Orc Warriors on the way:

Go along the path marked below, climb the ladder, walk a bit until you reach a hole. Don't go down into it, use the rope on it, which will give you the Barrel left there earlier:

Take the Barrel with you and go to the ladder to the west, go down and head to the right, towards the level gate. Kill the monsters along the way (Skeleton, Ghoul and 2 Beholders), as they can move the Barrel or destroy it:

Put the Barrel on the marked place between the walls.
Now two people have to go back to the place where they took the Barrel from, let one wait by the hole (she will be able to pull the other person up the rope as she comes back), and let the other go down and take the following path:

The locked door should be opened with Key 3301 and Key 3302, then walk down the corridor and at the end go downstairs. There should be a lever there that needs to be moved.
The last lever can be used only once a day. If the Barrel is not in the right place, or you take the wrong kind you will have to wait another day and consume another Power Ring.
There is a small trick to not wait for another day to complete the quest. If you take an extra Power Ring with you and use both by pressing the first lever, you will be able to use the 2nd lever again, even though it was used on that day.
After doing so, you can return to the level gate (preferably, of course, by the same route where you pulled the Barrel up the rope, but you can also go through the Giant Spiders once more).

The path to the reward should now stand open, so go, defeat some Demon Skeletons, reach the chest locked behind the door (which you will open with the Key 3304) and take the reward from it.