The unopened hatch is seen by Elliott in the third episode of the game. A beam of light can be seen emanating from the window. As Elliott investigates the Hatch, he can photograph the Numbers 4, 8, 15, 16, 23, 42 etched on the side.
The Swan contains three electrical panels. Fuses must be placed in the correct sequence in order for the lockdown to end. During the lockdown in episode four, Elliott discovers the blast door map and a second map leading to the incident room.
In order to go to the Staff medical station, Elliott must view six different objects at the beach camp (each with one of the Numbers 4, 8, 15, 16, 23, 42) in correct sequence in order to be transported to the Staff. Two Apollo bars can be found: one in the nursery, and one in the operating room.
Across from the main entrance to the Swan Elliott finds a hidden room. Inside of this room is a huge magnetic reactor, which has fallen into complete disarray. Elliott can use the computer in the room to disable to reactor.
After Elliot has run from and successfully survived an encounter with the Smoke monster and Juliet at the sonar fence, she will deactivate it, at which point Elliot can come through to the protected side. Towards the tree line on this side is an area that ends in a cliff, where there is a single capsule with a Pearl notebook.
Interacting with the item teleports Elliot to a version of the Pearl which is largely the same as that seen in the show, but appears somewhat newer and better maintained. The location is an easter egg with no relevance to the storyline.
Elliott enters the Flame through a secret back entrance, located across the Sonar fence. The basement of the Flame is dark, so Elliott must have a lantern or torch in order to navigate. In the upper level of the Flame, Elliott encounters Mikhail and Beady Eyes.
The beach camp evolves throughout the course of the game. In the first two episodes, the fuselage and wreckage is scattered throughout the camp. By the third episode, the survivors have created tents and water troughs throughout the camp. By episode five, a pantry stocked with DHARMA food is in the camp.
Elliott must navigate through two different caves, in episode two and three. The first cave leads to the front section of the plane. The second cave leads to the compass that has Via Domus inscribed in it.
Misc. Island locations
Below is a list of misc. Island locations in Lost: Via Domus
The jungle is full of dangers, especially the Dark Territory. There are many Others patrolling the jungle in lookout points in the trees. They will not hesitate to shoot Elliott if he is in shooting range. The Monster frequently stalks Elliott in the jungle. The banyan trees are a great place to hide from the Monster and the Others.
The Monster is always close by in Dark Territory. There are also many Others stationed in the trees and shooting Elliott on sight. The banyan trees are a great place to hide from either the Monster or the Others.
Lisa begs Elliott to help her bring down Savo. After running out of options, Elliott sells Lisa out to a bodyguard and takes an elevator to the room where Mittlewerk and Savo are meeting. Elliott then witnesses a terrible event.