Keys of various colours are used to unlock doors and progress further in Melzar's Maze during the Dragon Slayer I quest. They are obtained by killing the creatures in the maze in order to unlock doors of the corresponding colour. Players must obtain each of the different coloured keys to retrieve the map piece located at the end of the maze needed to complete the quest. Once used, the keys will disintegrate. Entry into Melzar's Maze requires a maze key, obtained from the Guildmaster in the Champions' Guild.
| Key | Monster | Notes | |
|---|---|---|---|
| Key (red) | Zombie rat | Only the rat with the long tail drops the key. | |
| Key (orange) | Ghost | Only the hooded ghost with no cape drops the key. | |
| Key (yellow) | Skeleton | Only the skeleton with a round shield drops the key. | |
| Key (blue) | Zombie | Only one of the two zombies can drop the key. | |
| Key (magenta) | Melzar the Mad | ||
| Key (green) | Lesser demon | ||