Warhead Detonation

The Warhead Detonation is a Mechanic in SCP: Secret Laboratory that causes the underground section of Site-02 to blow up, forcing everyone to evacuate to the Surface.
The Warheads act as a last resort emergency method in an event of a serious containment breach, with the intent of blowing up any threat that is inside Site-02.

In Game

The Warheads are a mechanic used to destroy the underground sections of Site-02, alongside all living beings present inside. It is intended to prevent prolonging of rounds, forcing all participants to the Surface Zone to bring a swift end to the round.

The Warhead control panel in its silo.

Enabling

To turn on the Warheads, one most locate the Alpha Warhead Silo Heavy Containment Zone. This room serves as both the location of Site-02's main warhead, the Alpha Warhead, and the control mechanism to detonate all of Site-02's warheads. At the bottom of a silo is the control terminal located at the back of the firing mechanism. The player must interact with the lever in the terminal and flip it to the "Ready" position. This can be done by anyone except SCP-079.

Afterwards, one must go up to the Surface Zone and enter the Warhead Control Room. Inside, there is a button locked underneath a glass panel, which requires a Keycard with Nuke Access to open. Afterwards, the button can be pressed by anyone if the Warheads are enabled.

The screen on the terminal will state the current status of the Warheads. "Ready" means you can turn the Warheads on. "Disabled" means you cannot turn the Warheads on. "Please Wait" means that you must wait before turning the Warheads back on.

Initiating

If the Warheads are enabled, and the button is pressed, a countdown will begin on the screens for the terminal found in the Alpha Warhead Silo and Warhead Activation Room. A loud alarm will also play twice as soon as the detonation sequence has begun. C.A.S.S.I.E. will then announce the activation and how much time until the Warheads blow up.

The time until detonation can range from 80 seconds to 120 seconds depending on the server, though the default time is 90 seconds. During the detonation sequence, a siren will begin to play, and red lights will turn on throughout the entire facility, including the Surface.
All doors within the facility will be locked in an open state during the nuke, with the exception of SCP-106's Containment Chamber Door, and SCP-079's Containment Chamber Door, which will stay closed.
Servers can use also configs to make it possible for Gate A and B to be closed during the detonation sequence; by default, Gate A and B will be forced open during the detonation sequence.

During the last 45 seconds of the timer until detonation, a snippet of "Ajoura - The SCP Foundation Main Theme" will begin to play.

The Overcharge event will not force doors shut during the detonation sequence.

Cancellation

To cancel the detonation sequence, a red button located in the Alpha Warhead Silo on the control panel must be pressed. When this happens, the sirens will stop, the lights go back to normal, and C.A.S.S.I.E. will announce the warhead has been cancelled. The lever can also be flipped back to the off state to stop people from turning the Warheads back on, forcing people to go back to the Nuke Silo to flip it back on.
If the detonation sequence is started again after being cancelled, C.A.S.S.I.E. will announce that the sequence has been resumed, and will say how much time is remaining. The time remaining is based off how much time was left when the Warheads were last canceled.

It is impossible to turn off the Warheads at the last ten seconds of the countdown; the screens in both the Silo and Surface nuke room flash "Detonation Inevitable" above and below the countdown.

Detonation

When the Warheads blow up, anything left inside the facility will be instantly killed. This includes SCP-079, regardless of what camera it is looking through (making it one of the three ways to kill SCP-079). The door to the Nuke Room on Surface Zone will also be forced open and cannot be closed.

Upon detonation, the next respawn wave will be forced to a four minute cooldown, regardless of their timer before the detonation. This means that if a team is spawning, for example the MTF Helicopter is about to land but the Warheads detonate, it will simply not spawn the MTF and go back.

Dead Man's Switch

A 2.5 minute countdown will begin when both teams run out respawns. If another respawn is gained during this countdown then it will reset. Mini-waves will only set the progress back by 40 seconds. If the timer reaches zero the Dead Man's Switch will activate and start the warhead countdown. This process can not be stopped once activated. Upon activation, all SCPs will have their health restored to 25% of their max HP if below that amount.

Sounds

Announcements

Warhead Activation:

"EMERGENCY DETONATION SEQUENCE: ACTIVATED. THE UNDERGROUND SECTION OF THIS FACILITY IS SET TO SELF-DESTRUCT IN: T-"

Warhead Cancelled:

"DETONATION SEQUENCE: CANCELLED."

Warhead Resume:

"EMERGENCY DETONATION SEQUENCE: RESUMED. T-"

Dead Man's Switch

"SITE RECOVERY FAILURE — DEAD MAN's SWITCH ACTIVATED. THE UNDERGROUND SECTION OF THIS FACILITY WILL SELF-DESTRUCT IN: T-90 SECONDS"

Time

120s Timer

"120 SECONDS"

110s Timer

"110 SECONDS"

100s Timer

"100 SECONDS"

90s Timer

"90 SECONDS"

80s Timer

"80 SECONDS"

70s Timer

"70 SECONDS"

60s Timer

"60 SECONDS"

50s Timer

"50 SECONDS"

40s Timer

"40 SECONDS"

30s Timer

"30 SECONDS"

Themes

Warhead Theme

Dead Man's Switch Theme

Dead Man's Switch Theme (with alarms)

Related Achievements

T-minus 90 seconds...
	Be on the Surface Zone when the Alpha Warhead detonates.

That was... close.
	Cancel the Alpha Warhead with 15 seconds or less remaining.