Security Doors

## Description

Security doors are blue colored doors with a vertical red stripe across the door handle. A small window is present to peer into the zone beyond. Security doors *cannot* be closed, once opened. Opening some security doors requires a team of prisoners to gather in front of the door to complete a bioscan sequence.

They function as a zone border, thus acting as a border for the terminal ping system. Like normal doors, the top left lists which zone it leads to and shows the zone(s) accessible after unlocking the door. Bordering zone information can be optionally gathered using the query command in the terminal.

Bulkhead doors share the SEC\_DOOR\_### ID prefix with Security Doors in the maintenance terminal system.

Security doors are found in specific parts of the complex, their locations never change. When found, prisoners may interact with them, initiating a mandatory security scan (bioscans) that requires all prisoners to be present in the designated area that appears in front of the door. The scan is complete when the progress bar reaches 100% and an option to open the door will be displayed.

Security doors with a green hexagon shaped icon indicate a checkpoint scan ahead. Prisoners may return to this security door after failing an expedition to retain progress.

Enemies cannot breach security doors while they are closed.

## Door states

Opening a security door may be blocked. This could be caused by the following:

#### **Key locked**

Security doors may also require a specific colored key that is displayed when the prisoner approaches the door. Until the right key has been inserted the door will be locked, making it unable to unlock the security door or initiate the alarm. The playable characters have a special voiceline when interacting with a key required door. When the required key has been displayed for at least one prisoner, it will be visible for the whole team on the map, next to the locked door.

#### **Unpowered**

Security doors may come unpowered. Similar to a key locked door, an unpowered door cannot be interacted with. The door will show which generator needs to be powered in order to restore functionality to the door.

#### **Emergency lockdown**

Security doors in lockdown cannot be interacted with. The only way to lift this lockdown is to proceed with the objective. Doors in lockdown are often seen in reactor objectives, with doors lifted from lockdown as the reactor phases progress. There are also very rare cases of security doors staying in the lockdown state for the entirety of the expedition.

## Alarmed Door

While some security doors can be opened without alerting sleepers, there are security doors that trigger a security alarm upon activation. The alarm sounds loud and far in the complex, alerting large groups of enemies. Alarms cannot be prevented or avoided; they **must** be done to open the security door.

Alarms do not activate immediately upon a key being used. When a key is placed on the matching security door, prisoners can activate the the alarm separately if one is present (like how non-alarm bioscans need to be activated manually on non-alarmed security doors).

## Bloody Doors (Trapped Doors)

Bloody doors are special security doors which only appear in certain expeditions. They appear similar to regular security doors, however, they have an ambient sound while near them and they are coated in blood. This is due to a horde of awoken enemies behind it, slamming on the door and waiting for it to open and pass through. When a bloody door can be opened, they will have a warning (*Warning: Motion Detectors triggered!)* as another way to tell that enemies are behind that door.

The type of enemies that spawn at once is based on some RNG and expedition depth. One enemy which is almost always seen behind them is the Hybrid, this combined with the usually large number of strikers to act as fodder causes them to be dangerous. Enemies spawned may also be a few tough enemies or a single strong enemy. The bio tracker *cannot* scan or detect enemies behind a blood door prior to opening it, however, when the door unlocks, entries in the scanner will slowly populate behind the door.

Since bloody doors are just security doors with enemies waiting behind them, they can come in with the same varieties as the normal security doors: with an alarm, key locked or unpowered. Bloody door alarms share the same properties with normal door alarms.

## Apex Doors

Apex/Warden doors are uniquely designed security doors, though share identical functionality. Apex doors usually lead to parts of importance, such as the reactor room or extraction scans. They may also hold special, unknown threats behind them.

## Gallery

* Security Door With Zone In Top-Left Corner
* Opened Security Door