Lost in Nightmares

Lost in Nightmares is the first story-based DLC for Resident Evil 5, set during a previous mission hinted at in flashback in that game. It is known that it will be about one to two hours in length It is separated into four sub-chapters, and in these,there is an abundance of classic puzzles designed as fanservice.

It also features a scoreboard with worldwide rankings based on performance in the scenario as well as collection items. This add-on costs 400 Xbox points for download on Xbox LIVE.

Premise
Players will take control of BSAA agents Chris Redfield and Jill Valentine as they enter the Spencer Estate sometime in 2005, in search of the founder of the Umbrella Corporation, Oswell E. Spencer. The mansion is very reminiscent of the mansion in the Arklay Mountains of the first RE game. Players will work through the mansion to reach Ozwell E. Spencer just moments after he is murdered by Albert Wesker.

Chapters
While this add-on doesn't have multiple chapters (as it is, itself, a single chapter) it is broken up into several sections. These sections include a mansion area that is deliberately similar to the Arklay Mansion from Resident Evil. Following that is a prison section that seems almost reminiscent of the Island section of Resident Evil 4. This leads up to an altercation with Wesker, which is featured heavily in the main game.

Enemies
The Guardian of Insanity is the main enemy prior to the boss fight. His actions and attacks resemble the executioner, yet is harder to defeat due to his additional stronger attacks. You encounter at least 5 of him and must fight at least one without any weapons of any kind.

Under the correct circumstances you may have to confront him during the initial mansion section of the chapter, as documented here

There are also enemies that resemble Zombies. They are not zombies like the other games of the series, but they do seem to be infected with some variation of the Progenitor Virus. They are often in a prone position when you happen on them and will jump up to physically attack the player.

The final boss is Albert Wesker. You battle him in a fight reminiscent of the first battle with him in the main game. The outcome of this chapter is always "negative." You never beat him, but you have to survive.

Lost in Nightmares DLC
The mission starts with Jill and Chris locating the Spencer Estate and breaking in. The Estate bears several resemblances to the Mansion in Raccoon City and Jill/Chris discover Spencer's Bodyguards brutally killed off. As you try to open the path leading to the basement, a BOW called The Guardian of Insanity will stalk through the Estate. Through files and folders of Spencer and his butler, you'll learn that Spencer was obsessed with becoming a God and tried to create a cure for his 'frail humanity'. This lead to experiments on a unnamed island in which one of most loyal children Alex was conducting for his master. But one learns that Alex indeed suceeds but betrays Spencer. You will also learn that Spencer released information of his whereabouts so Wesker would come find him. Upon unlocking the path to the basement, you'll be hunted by more Guardians of Insanity. Jill and Chris will have to work around them as they try to unlock the path to the Spencer. At some point, Jill and Chris will fall into a large pit, where they'll lose their weapons and have to set up traps to kill the Guardians of Insanity. After escaping from the underground section, they'll find new handguns and be forced to face Wesker, before Jill sacrifices herself to save Chris.

Connection with Resident Evil 5 main game
Weapon upgrades from Resident Evil 5 do not carry into Lost in Nightmares, instead you are given a standard set of weapons and find more on the mission. These all appear to be un-upgraded. Completing Lost in Nightmares does not appear to give anything to your main game save.

This DLC features five new Xbox Live achievements.

Trivia

 * When the player opens doors in the mansion area, the camera suddenly switches to a first-person perspective view of the door opening, in homage to the classic loading screens from the earlier games.


 * If one checks the main hall front door three times the camera system reverts to the static camera angles used in the original Resident Evil.


 * A spiked celling comes down on Jill while Chris has to save her, deliberately recalling a specific event from the Mansion Incident.


 * While the gameplay stays the same as RE5, the style and feel of Lost in Nightmares is very reminiscent of past titles. Set in a mansion (that is almost an exact replica of the mansion in Resident Evil) The puzzles involving a character to play the Moonlight Sonata to reveal a hidden room. And while players can fight the Guardian of Insanity, they can also opt to avoid them, but eventually having to fight them later on.


 * The Keeper's Diary from the original Resident Evil can be located in the upstairs bedroom, next to one of the passcodes. The file is identical to the one seen in RE1. This file is known as one of the more famous files in the series, due to it's disturbing imagery, and since it shows the author's decline in health over time.


 * The 'Grade Screen' music is a new version of the original Resident Evil (and REmake) save room theme.


 * During the Mansion section, some of the ambience and music is incredibly similar to certain parts of REmake's soundtrack - e.g. The dining room (and the stairwell and rooms reached through it) sometimes features a seemingly new version of the music played in REmake, whilst traversing the corridors.