Lava Lair

The Lava Lair is one of two quests in Clone Tycoon 2 Along with Planet I. Completing this quest unlocks the Basement Portal, aka Basement.

Accessing
To get to the Lava Lair, you will need a plane. Head to the observatory, which is next to the bar. Look at the computers on the first floor, then go to the telescope above the one that says, "Lava Lair" and look through it. There you will see a bright red planet. Go to your base and board the ship of your choice. Then fly in the direction of the planet. It may not appear at first, but keep going and it will ask if you would like to teleport.

Accept the teleportation request and you will be transported to the Lava Lair.

Quest
There are three doors at spawn, which means three keys: The Amethyst Key, The Copper Key, and The Obsidian Key.

Amethyst Key
To obtain the Amethyst Key, there is a simple obby to complete. The key is waiting at the end.

Bronze Key
To obtain the Bronze Key, there is a maze to finish. Again, the key is at the end.

Obsidian Key
Interesting One. To obtain the Obsidian Key, you need two or more players. you can also use an alt. You will see a "join game" button somewhere. Hit it and soon you will be transported. Each button switches on the bridges next to it. If your teammate(s) cooperate(s), then you should be fine.

Code
Place the keys into the door, then find a dialpad looking thing. Enter what you saw on the doors. It is different each time. As you do this, the percentage will go up at the top, saying "The code is X% complete" with x being your percentage.

Alternatively you could just keep clicking until the percentage goes up.