Trauma is a DLC expansion for the 2014 video game Alien: Isolation. As with the majority of Isolation's DLC packs, it expands the game's Survivor mode, introducing new maps and a new playable character. Set before the events of the main game and simultaneously with the previous DLC pack, Corporate Lockdown, it casts players as Sevastopol's chief medical officer Dr. Lingard as she attempts to collect medical supplies for her camp while also destroying all record of her research on the Xenomorph, to prevent it falling into the wrong hands.
The pack introduces three new Survivor maps, "Reoperation", "Crawl Space" and "Overrun", taking players from the San Cristobal Medical Facility to Lingard's safe camp in the Josiah Sigg Executive Apartments. Despite Lingard being the suggested playable character, players can choose from a selection of characters (including Amanda Ripley, Dallas, Ellen Ripley and Ricardo), each of whom start with different weapons and equipment.
Trauma was the fourth piece of DLC for the game, released on December 2, 2014.
It is revealed in Reoperation that Lingard has been part of a camp during the Xenomorph outbreak on Sevastopol Station, though medical supplies are running low with numerous survivors in need of them. Additionally, she realizes that some of her research files have been stolen and needs to destroy the rest of them before anyone else can get to them. Once arriving at a section of the medical facility, she discovers that it has been destroyed and vandalized with graffiti. Whilst being hunted by the Xenomorph, Lingard sees Ransome in an upper section of the medical facility where all her research was kept. Lingard initiates an emergency hazard cleanse in the sector, with the area exploding and Ransome fleeing the scene. Lingard also collects some remaining medical supplies and later leaves.
Lingard, in hopes of avoiding any conflict with the Xenomorph or any other threat on the station, attempts to take a different route within a ventilation shaft. Unfortunately, the shaft is invested with Facehuggers and Lingard uses a newfound flamethrower to combat them. When taking a different course, Lingard stumbles across a small hive which she quickly leaves after picking up an engineer's report. Once leaving the vent, she sees that her exit is covered in noxious gas, with two Working Joes wandering the area as well. After grabbing a gas mask off of a corpse, Lingard manages to vent out the gas and take her leave in an elevator, returning her to the camp.
Once arriving at the camp, it is revealed that a horde of androids have infiltrated the camp and slaughtered its inhabitants, making Lingard the sole survivor. After a series of grave encounters, Lingard manages to access the emergency lockdown and flee in an elevator.
Her fate afterwards is unknown.
- Much as the player could glimpse Lingard in Corporate Lockdown, Ransome can be seen from a distance in "Reoperation" — he is visible through a window high up in the wall beyond the terminal from which the player activates the emergency hazard cleanse procedure.
- Ironically, the titular Alien is only encountered in the first of the DLC's three levels. The remaining two feature numerous Facehuggers and hostile Working Joes, but no matter what the player does, the adult Alien will never appear.