Kill skeletons holding a round shield until you get a Yellow key. Use it on the door SECOND FROM THE EAST and go up the ladder. Kill ghosts wearing a hood and no cape until you get an Orange key. Use it on the Northwest door and go up the ladder. Kill some Zombie rats until you get a Red key. To get the first map piece, grab some food and go to Melzar's Maze (it's south of the Crafting Guild). During the conversation you will receive a Maze key. Before you leave, ask him every available option (if you miss any of the options you will not be able to finish step 9, make sure you click through all options). He will tell you that you need to obtain the three pieces of the map to Crandor.

Head back to the Champions' Guild and talk to the master again. He will tell you that to buy a Rune platebody from him, you will have to defeat Elvarg the dragon on Crandor island. Talk to Oziach and ask him about the Rune platebody. Oziachs house is North-west of edgeville. Ask him about Rune plate armour and he'll tell you about Oziach.

Talk to the Champions' Guild Master south-west of Varrock.

Runescape old school dragon slayer 2