The Deep Sea: Nullify Threat cheat code is unlocked by finishing the level in under 7:27 on Perfect Agent. This unlocks the FarSight cheat.

Mission : Deep Sea: Nullify Threat

Briefing

We have finally discovered the purpose of the conspiracy: a gigantic alien vessel lies at the bottom of the Pacific Ocean. Though dormant, the Cetan ship is now being stormed by the Skedars and their forced ally, dataDyne Corporation.

Carrington

The first analysis of the data reveals incredible information. We have determined as many objectives as possible from this information. The gigantic structure on the ocean floor is a vessel of alien origin. It's apparently a sentient ship - built by an alien race, the Cetans - though it's currently dormant. However, it houses the most powerful weapon ever to have existed.

Mission Intro

Joanna and Elvis arrive by elevator. A guard spots the elevator, runs off, and turns invisible.

Objective 1 : Reactivate Teleportals

Reactivating the teleportals will let you access parts of the ship that are normally inaccessible. If the Skédars have managed to block access to the Control Room, the longer path will surely be the only one available.

Objective 2 : Disable Cetan Megaweapon

It's a weapon of fantastic power. According to the analyzed notes, it's capable of breaking the weak bond that holds molecules together. If the Skedars get their hands on it, the Earth will turn into a vast cloud of dust within the hour. It's up to you now: destroy the modules inside the ship and the weapon will stop working. Some may be out of reach of standard weapons.

Objective 3 : Secure Control Room

Make sure no Skedar remains in the Control Room so that Dr. Caroll's personality can be restored without interruption. We don't know what security measures have been put in place to prevent this operation, so be careful.

Objective 4 : Restore Dr. Caroll's Personality

This is the final stage of the emergency plan set up by Dr. Caroll during the briefing at the villa. Restoring his personality to the AI will let him regain control of the sentient hull and other parts of the ship.

Objective 5 : Escape from Cetan Ship

Escape with Elvis and Dr. Caroll through the cargo bays, once you've made sure the ship's destruction is assured by any means. Use the submersible to reach the surface, where the cruiser HMAS Newcastle will pick you up.

End of the Mission

As Elvis and Joanna pass through the large door, Dr. Caroll explodes just ahead of the Cetan ship. Did they make it out alive? We'll find out in the next mission: Carrington Institute: Defense.