Required:

Skills: 35 agility, ability to kill a level 100 monster, magic 13+ recommended. Also access to the Barbarian Outpost needed (read at the bottom of the guide if you don't have access already).

Items: 2 planks, 60 steel nails, hammer, tinderbox, swamp tar, molten glass, 1 air, fire, water and earth rune, 1 sword (can't get it back, so max steel would be a good idea) and an arrow (not an ogre one). You will also need food for the fights.

Note: Range attacks and all four basic rune (air, water, earth and fire) magic attacks are highly effective, so bring the runes for around 10-15 of each spell, and around 30 arrows and a bow. You can kill it without them, but it requires a lot of food/prayer potions.

You also must have completed The Alfred Grimhand Barcrawl.

Monsters: Dagannoth (level 100), Dagannoth Mother (level 100)

Go to lighthouse, which is north of the Barbarian Outpost in Kandarin. It's easiest to reach by going west from Rellekka, or if you have a Games Necklace, you can teleport there. When you get there speak with Larrisa, and she will tell you to go to her cousin Gunnjorn and get the lighthouse key. Ask where he is and how to fix the bridge, and then head off to the east and fix the bridge there by using one plank on each side (30 steel nails each).

Now go south to the Barbarian Outpost and speak with the owner of the agility course (Gunnjorn), who will give you the key for the lighthouse. Go back and speak with Larissa, then enter the lighthouse. If you can't access the Barbarian outpost yet, see our Barcrawl and Beer guide for more information on how to do so.

Once inside, speak with her again, and she'll ask you to fix the light. Go all the way up and use your tar on the machinery, then tinderbox, and then molten glass, it will now light up. Go down and talk with Larrisa, and then up on the first floor, search the bookcase and get Jossik's Journal, read it, and after that search again for the ancient diary, read this as well. Go down and down the iron ladder, you'll now be in a cave.

A little to the north you'll find a strange wall where you use your runes, sword and arrow on it.

Then open the wall, climb down the ladder and talk with Jossik. Now get ready to kill some beasts. You will first be required to kill a "baby" Dagannoth (level 100), which is fairly straightforward (you can try to stand between Jossik and the North wall, this acts as a safe spot). But the mother is more complicated. She attacks you with melee and range, there's no easy safe spot (although you can try hiding behind stalagmites) and there's a special way of killing her. Here's how to kill it. It has a total of 6 different colours, you can only do damage on it if you use the right kind of attack for each colour. You can only poison it with arrows(p) or the dragon dagger if it is the right colour.

• Red - Fire spells (strikes, bolts, blasts or waves)
• Brown - Earth spells (strikes, bolts, blasts or waves)
• Blue - Water spells (strikes, bolts, blasts or waves)
• White - Air spells (strikes, bolts, blasts or waves)
• Green - Ranged attack (Special attacks)
• Orange - Melee attack (Dragon dagger(p) is a good idea)

The Dagannoth changes colours in this way: White, Blue, Orange, Brown, Red, Green, and then back to white. So, if you just want to fight it in some parts, you can run away from it to a safespot between the forms you don't want to fight.

When you've killed it you'll have a chest in your inventory. Go to the first floor with this and speak with Jossik who will ask you to read what the chest says, simply choose the Runescape God you prefer (Saradomin, Zamorak or Guthix), and you will receive a book of that God. There is no "right" God to choose, it's totally up to you. You have completed the quest!