Items needed/recommended (can be bought from the G.E.):
•Varrock teleport tabs
•Amulet of glory (4)
•Wizard’s mind bomb (teleport to Falador, go to the bar there and talk to Emily; ask her if you could have a regular beer and she’ll give you it)
•90 steel nails
•Armour + weapon
1.Teleport to Varrock and talk to the Guildmaster at the Champions' Guild about the quest. He'll tell you to talk to Oziach afterwards.
2.Teleport to Edgeville and talk to Oziach about the quest.
3.Teleport back to the Champions' Guild and talk to the Guildmaster again. Make sure to go through all the options then he'll give you a Maze key.
4.To get to the maze (you can either teleport to Draynor and walk there or teleport to Port Sarim using the loadestone and walk from there). Once you get there you'll have to obtain a set of keys after killing certain NPC's to get the map part eventually.
•Kill the Zombie rats until you obtain a Red key then go into the marked door in the picture and go upstairs.
•Kill Ghosts until you obtain an orange key and go into the marked door then go upstairs.
•Kill Skeletons until you obtain a yellow key and go to the southwest and climb down the ladder at the end of the corridor, then climb down another ladder on the lower floor and then a final ladder down on the fist floor into the basement.
•Once you're in the basement, walk to this room with the 2 Zombies and kill them till you get a blue key.
•Go into the blue door and kill Melzar the mad, he'll drop a magenta key, walk into the magenta door after.
•After you go through the magenta door, kill the Lesser demon and it will drop a green key.
•Open the green door and then open the chest and search it for the map part.
5.For the 2nd map part, teleport to Edgeville and walk to the Ice Mountain, make your way to the northern side and talk to the Oracle.
6.Walk to the Dwarven Mine (south of the Ice Mountain) and go down the ladder, to the mines.
7.Once you're in the mine, follow the white line I drew in the map below. Once you're at the door, use the Wizard's mind bomb, Silk, Lobster pot and Bowl (unfired). Go into the door and then open the chest and search it for the 2nd map part.
8.Teleport to Port Sarim, go to the jail south of the Food Shop, talk to Wormbrain and pay him 10K to get the final map part.
9.Click on one of the map parts that you have to make the Crandor map.
10.Walk east of the Food Shop to the docks in this minimap and talk to Klarense to buy a ship from him.
Make sure you have 90 Steel nails, 3 Planks, Hammer and 50k. Once you buy it, cross the gangplank and go down the ladder to repair the hole in the ship.
11.Teleport to Draynor and talk to Ned and ask him to take you to Crandor. Then go and meet him back at the ship to sail to Crandor.
12.Once you're at Crandor, follow the path on the I drew on the minimap below and enter the hole.
13.Once you enter the hole, keep walking south a bit till you reach Elvarg's lair. Climb-over Wall and then fight Elvarg.
14.Pick up Elvarg's head after you kill it.
15.Teleport to Edgeville, and talk to Oziach again to finish the quest.