Silver Doors:
Silver Doors are locked doors that contain a special loot chest. A Silver Key is required to open this door. These are not required to progress through labyrinth and are only optional. They are indicated with a grey door symbol on The Labyrinth Map.
Golden Doors:
Gold Doors are locked doors that block the way forward. A Golden Key is required to open this door. They are indicated with a yellow door symbol on The Labyrinth Map.
Silver Keys:
Silver Keys are required to open Silver Doors. They can be found in Silver Chests and are marked with a grey key symbol on The Labyrinth Map.
Golden Keys:
Golden Keys are required to open Golden Doors. They can be found in Gold Chests. They are indicated with a yellow key symbol on The Labyrinth Map.
Treasure Keys:
Treasure Keys are required to open Treasure Chests. The player can have up to a maximum of 9. These can be found:
- 1 from Izaro
- 1 from Argus
- If the first or second phase empowers Izaro, it results in an extra key(up to 2)
- Curious Lockboxes Drop 1 Key(up to 2)
- Darkshrines have a chance of having Izaro drop an additional Key
- One of the Treasure Chests at the end of the Lab have a chance of dropping 2 additional Keys
Treasure Chests:
Treasure chests have a set loot table.