Shade Catacombs

The Shade Catacombs is found under Mort'ton as part of the Shades of Mort'ton activity and is a complex labyrinth. The entrance is to the north of Mort'ton and is displayed on the overview map. To access it you need to have completed Shades of Mort'ton and have a Shade key of any type. In the catacombs, there are various shades and chests in which the rewards can be found. To get a bronze shade key, kill a Loar shade in Mort'ton, sanctify some Olive oil at the repaired temple to make Sacred oil, then use the sacred oil on any log, making a pyre logs. Use the pyre log on one of the four pyre slabs in one of the seven shade burning areas of Mort'ton, identified by grey diamonds on the minimap. Then use the shade remains on the pyre logs, then click on the pyre again to light it. You may need to burn more than one, as sometimes burning a shade produces coins instead of a key. The key or coins will appear on the stand at the end of the pyre.

Monsters

Loar shade (Not inside the catacombs, but in the town of Mort'ton)
Phrin shade
Riyl shade
Asyn shade
Fiyr shade

Keys

When you burn a shade up, you will receive some keys instead of coins. However, there are 5 different types of keys, used to open a single chest in the many treasure rooms inside. Upon using the correct key on the correct chest, it will disappear, and you will receive a random reward from the chest.

If used on a door, the door will unlock. The key will not be lost.