Dragon Slayer

Official quest description: Prove yourself a true hero. Kill the mighty dragon Elvarg of Crandor Island and earn the right to buy and wear the powerful rune platebody and green d'hide body.
Release date: 23 September 2001
Start: Talk to the Guildmaster, located inside the Champions' Guild.
Difficulty: *****
Length: Long
Members only: No
Requirements:
33 quest points
Capable of defeating the level 83 dragon Elvarg that can drain prayer and use a dragonfire attack that hits at a distance
Capable of defeating a level 82 lesser demon
8 Crafting helps
30 Mining helps
34 Smithing helps
Ability to cast Telekinetic Grab (level 33 Magic) can also be helpful. Magic boosts (such as Wizard's Mind Bomb) can be used.
Items needed:
3 regular planks (found in Wilderness, at the Barbarian Outpost, in the Grand Exchange or made at the sawmill)
90 steel nails
A hammer
An unfired bowl
A Wizard's Mind Bomb (bought in Falador's bar for 3 coins. Note: If you need Wizard's Mind Bomb as a boost, make sure you bring an extra!
A lobster pot
A piece of silk
An anti-dragon shield (obtainable from the Duke of Lumbridge)
2,000 coins
One-handed weapon with which to kill Elvarg (Rune weapon or better recommended)
Armour (Adamant armour or better recommended)
Telekinetic Grab runes (if 33 Magic) or another 10,000 coins without 33 Magic
Recommended:
Lots of food for the final battle (lobster or better)
Anti-fire potion (members)
Teleportation runes are strongly recommended.
Monsters to kill:
Zombie rats (level 3)
Ghosts (level 19)
Skeletons (level 22)
Zombies (level 24)
Melzar the Mad (level 43)
Lesser demon (level 82)
Elvarg (level 83).
Spoiler warning: Plot and/or ending details follow.
edit Walkthrough
Talk to the Guildmaster in the Champions' Guild. After asking him for a quest, he will tell you to talk to Oziach, who is located west of Edgeville in a small house very close to the Wilderness. Oziach says that to be able to buy a rune platebody from him, you have to kill Elvarg the dragon, who is located on Crandor Isle. He will tell you to go the Guildmaster for information on how to kill Elvarg. Ask the Guildmaster about ALL three map pieces (make sure to ask about all three or you can't proceed with the other pieces) and he will give you the key to Melzar's Maze.
[edit] Obtaining an Anti-Dragon shield
RuneScape uses the British convention for floor numbering: Ground floor, first floor (immediately above the ground floor), second floor, etc.
Go to Lumbridge and talk to Duke Horacio on the first floor of Lumbridge Castle. Ask him about a shield that will protect you from a dragon's fire breath. He will then give you an anti-dragon shield. Note that if you lose your current shield, you can talk to him again to get another. It is also possible to get multiple shields by receiving one from the Duke, dropping it, and asking for another. You don't need the shield until the end of the quest, so bank it for now.
Obtaining the Map Pieces
These map pieces may be obtained in any order. Once you have all three, use any piece on any other piece to form the complete Crandor map.
First Map Piece
The first piece is found in Melzar's Maze, south of the Crafting Guild. Bring some food and armour for the fight with the lesser demon. To enter, use the maze key on the door.
Kill zombie rats until one drops the red key. Use this on the northwest door, then go up the ladder.
The orange Key is dropped by ghosts. Kill ghosts until you get the key, then go through the middle door, second from the north, on the east wall and climb the ladder.
Kill the skeleton with the small shield, which drops the yellow key. Use it on the southwest door and keep climbing down until you get to the zombies.
Kill zombies until you get a blue key. Use it on the northwest door.
You must now fight Melzar the Mad, but be cautious as he attacks with magic, namely Fire Strike and Weaken. When killed he drops the magenta key. Use this key on the magenta coloured door.
Now you have to fight a lesser demon, which drops the final key you need. Silverlight may be useful if you melee the demon. Rangers should use their strongest ranged equipment, preferably a maple bow and steel arrows (or stronger). Mages should cast bolt spells or stronger. Note that there is a safe spot behind one of the wooden boxes for those who choose to range, mage or use a halberd against the demon.
Once the demon is defeated, open the final door and take the map piece from the chest.
Second Map Piece
Go to Ice Mountain and speak to the Oracle. She gives you a riddle:
"The map's behind a door below,but entering is rather toughThis is what you need to know,You must use the following stuff:First, a drink used by a mage,Next, some worm string changed to a sheet,Then, a small crustacean cage,Last, a bowl that's not seen heat."
To obtain this piece of the map, you'll need an unfired bowl ("bowl that's not seen heat"), whether it be bought or created with the Crafting skill, a Wizard's Mind Bomb ("drink used by a mage"), which can be bought in Falador for 3 coins, a lobster pot or a crayfish pot ("small crustacean cage"), which can be bought in Port Sarim's fishing shop, and a piece of silk ("worm string changed to a sheet"), which can be bought in Al Kharid or in Varrock.
Once you have all these items, go down into the Dwarven Mine.
Inside the mine is a room with sealed door in the northeast part of the mines, just north of the scorpions. When you've found it, use all the items on the "Magical Door." Be sure to use the Wizard's Mind Bomb with the door, as the left-click action for it is to drink it. They will disappear after usage.
Trying to use the items on the door without consulting the Oracle results in the message "I have no idea what I should put in the opening of this door. Maybe I should just leave it for now."
When you open the chest inside, the following message is displayed:
"Here I rest the map to my beloved home. To whoever finds it, I beg of you, let it be. I was honour-bound not to destroy the map piece, but I have used all of my magical skill to keep it from being recovered.This map leads to the lair of the beast that destroyed my home, devoured my family, and burned to a cinder all that I love. But revenge would not benefit me now, and to disturb this beast is to risk bringing its wrath down upon another land.I cannot stop you from taking this map piece now, but think on this: if you can slay the Dragon of Crandor, you are a greater hero than my land ever produced. There is no shame in backing out now."
The chest in this room contains the second map piece.
Third Map Piece
The third and final map piece is in the possession of a goblin named Wormbrain, who is being held in the jail at Port Sarim. There are two ways to obtain the map piece:
Kill Wormbrain with range, magic or a halberd and cast Telekinetic Grab on the map piece (requires 33 Magic); or
Speak to him and pay him 10,000 coins for the piece.
Obtaining a Ship

Klarense found in Port Sarim during Dragon Slayer.
Go back to the Guildmaster and ask him about acquiring a ship. You will need 90 steel nails, a hammer and 3 regular wood planks (other, such as oak, won't work). You can smith 6 steel bars into 90 steel nails, or buy the nails from the Guild Master in the Champions' Guild or the Grand Exchange. Bring these items and 2,000 coins to Port Sarim and look for Klarense, a sailor. He is located on the southern docks. Buy his boat, the Lady Lumbridge, for 2,000 coins. Board the ship and descend down the ladder, where you will see a hole in the hull. Repair the hole in the ship by using the planks with the hole. Do this three times and the hole will be repaired.
Go to Draynor Village and talk to Ned, the person who makes ropes for you. Bring your map. Ask him to be the captain and help sail you to Crandor. He will agree and tell you to meet him on your ship.
The Fight

The battle with Elvarg.
Before setting off for Crandor Island, stop at the Draynor Village bank. Get out your anti-dragon shield, your best armour suited for your fighting style, your one-handed weapon, any potions, runes/bolts (if maging/ranging), teleport runes, and fill the rest of your inventory with food (lobsters or better)(Member foods, such as shark and sea turtle will heal you if you have low healthpoints easily, make sure your health is by 12 because the highest attack is a ten). If possible, try to avoid bringing food that is eaten in more than one bite, such as pizzas. They may heal more hitpoints in the long run, but the extra time needed to eat them could mean defeat in the battle with the dragon.
Board your ship and sail to Crandor Isle. A short cutscene will play, during which Elvarg flies over your ship in circles and sets it on fire! Cabin Boy Jenkins starts to panic. He will catch on fire, take 10 damage and die. After crashing on the shore, make your way across the island to the peak, avoiding the progressively stronger monsters. Run past the lesser demons at the top and take the stairs into the heart of the island. Another cutscene plays. Move past the skeletons until you see Elvarg behind a short wall of spikes protruding from the ground on the east. Climb over it, making sure that your anti-dragonfire shield is equipped, and begin the fight.

Battle Strategies
Melee
Being a dragon, Elvarg is weakest to stab attacks. If you use a slashing weapon, such as the popular rune scimitar, you can still defeat Elvarg but you will not hit her as often. Crush attacks will do moderately well against Elvarg, but not as well as stab attacks.(Avoid using the silverlight or darklight they do little damage, and are very inaccurate unless against a demon.) For stab attacks an adamant longsword/rune longsword would work the best. You could also use a rune battleaxe for its crush attack, but avoid adamant battleaxes. If you are a member then you could use a dragon dagger p++ or a dragon longsword (if you've completed Lost City, that is). You should have no problem killing elvarg if your combat level is over 60.
[edit] Ranged
If you use ranged on the dragon, make sure you are using a crossbow since it is one-handed, unlike a bow which is two-handed. With the crossbow, you are still able to equip the anti-dragon shield necessary for the quest. This is more of an option for members as they have access to far better crossbows and bolts. Bring plenty of bolts (at least a hundred) and wear your best leather and dragonhide equipment. As your armour will not have high melee defence, make use of the safespot in the southeast area of her lair behind a wall of stalagmites. This won't protect you from her dragonbreath, which can hit at a distance, but will keep you away from her melee attacks, which can be devastating to you if you wear anything besides adamant or rune armour.
Magic
Magic is not a common approach to the fight with Elvarg, and is not highly recommended, but it is still possible to carry out. Mages should cast Fire Bolt or a stronger spell and bring lots of runes for casting offensive spells. If you choose to mage Elvarg, use the safespot behind the stalagmites in the southeast corner of the room.
Defensively
Whatever your fighting style, as stated before, an anti-dragon shield is a must. Members can make use of antifire potions to completely negate the damage from Elvarg's dragonbreath attacks. If your Prayer is high enough, Protect from Melee will block Elvarg's melee attacks; a combination of Protect from Melee, an antifire potion, and an anti-dragon shield will negate all of Elvarg's damage. However, prayer points are drained during combat, so a prayer restoration method (such as prayer potions) may be necessary if you choose to pray.
Elvarg's dragonbreath can hit up to 60+, so if your health drops below 5, immediately eat. Keeping your health above the 20s, just to be safe, is a good strategy in case Elvarg hits multiple times in a row with her dragonbreath. Her melee attacks can hit up to 20, so wear good adamant or rune armour (if meleeing). If you run out of food, teleport unless you can kill Elvarg in one or two more hits. It is better to retreat from the fight with your items intact than die and lose them. Elvarg is extremely strong, be advised in which food you choose to bring. Lobsters and swordfish are recommended.(If a member, shark is a good thing) If your hitpoints are 40+ eat when you are in the low 10's or below 10.
Finishing up

Elvarg is finally defeated.
Once you kill Elvarg, a cutscene will play during which you cut off her head. It will appear in your inventory. Leave Crandor and take the head to Oziach, who will declare you worthy and give you your reward.
There are two ways to leave Crandor after the fight:
Teleport away, using Lumbridge Home Teleport, an explorer's ring or a teleportation spell; or
Exit Elvarg's lair and continue along the dungeon, avoiding the skeletons and lesser demons, until you come to a wall. If you push that wall you will pass through a secret door and end up inside the Karamja volcano. From there you can pay 30 coins (which you can bring with you or raise on the island by selling items to the general store or working for Luthas) to sail to Port Sarim.
If you have not opened the secret door, it is advised you teleport out because if you are on low health from the fight then the lesser demons outside the lair might kill you.
If you lose the dragon's head, you cannot go back and kill Elvarg for another. Simply return to Oziach and the quest will end as normal.