Level 17: Tethys H2O Mine Feste: "Say'st thou that house is dark?" 
Malvolio: "As ----(word edited out), Sir Topas." 
Feste: "Why, it hath bay windows transparent as barricadoes, and the clerestories toward the south north are as lustrous as ebony; and yet complainest thou of obstruction?" 
Twelfth Night, Act IV, Scene 3

Introduction:

If you are one of the rare type of Descent players that take pleasure in blowing up proximity mines, this level is for you. If you are not(like me), this level could be a level that would make you have nightmares. This level is the first level to have Gopher Robots. Otherwise from the addition of proximity mines, this level is fairly straightforward.


Warnings:
Lower Platform
The outer area of the level is structured like a gyroscope. The outer area is the area which contains the Gopher Robots, which should be destroyed.

To find the blue key, look for this platform indicated on this map. You will know that you are there when you are under attack by Class 1 Drillers. Destroy them, grab the invulnerability, and go down the hole. Be extremely careful not to enter the door...you may not be able to get back out....


Blue Key Room
This key is guarded by Class 1 Drillers and Super Hulks. SInce you have the invulnerability, destroy them as quickly as possible and grab the blue key and the powerups located around the path to the blue key.

You will have to go back to the lower platform and out to the outer area of the level to access the blue key.


Junction
This area contains the blue door. It is guarded by a Class 1 Heavy Driller. You should destroy it and any Gopher Robots lurking around before entering the blue door.

This area also contains one of two energy generators.


Yellow Key Room

When you enter the blue door, you will come upon an antechamber guarded by cloaked Medium Lifters. They should be destroyed. Then continue to the door ahead.

Once you have entered the door, switch to you plasma cannon and destroy every enemy in this room. This area is guarded by Class 1 Drillers, Class 1 Heavy Drillers, Medium Hulks, Super Hulks, and cloaked Medium Lifters. Most of them are located within the weapons caches branching out from the yellow key room.

Each cache contains a variety of weapons for your use, with each cache specializing in a particular type(e.g. plasma weapons), and are guarded by only one type of robot corresponding to the weapons that they guard.

Once you have grabbed the yellow key, you must return by the way you came and head back to the lower platform. The robot generator in the antechamber will activate, but you should bypass it.


Yellow Key Zone and Hostages

This area contains the hostages and the other energy generator.

The hostages are split into two cells. Blow the doors off both cells, but do not rescue the hostages yet.

The labyrinth of passages near the hostage cells lead to the red key. They are guarded by Advanced Lifters. You should destroy most of the lifters before attempting to grab the red key as they will block your path.

Also located here is an invulnerability and a shield powerup. The invulnerability can only be used in this area...use it when you grab the red key.


Red Key Room
 
 
Once you reach the vicinity of the key, you will be instantly surrounded by enemy fire. The key is guarded by Medium Hulks, Class 1 Drillers, Advanced Lifters, and Class 1 Heavy Drillers. Destroy them all before grabbing the key.

You will have to return to the outer ring to find the red door. Once you reach the lower platform, make two right turns and you should see the red door to your left.


Reactor Room

Once you reach the red door, back up and open it from long range. This will prevent you from being caught in the blast radius of a homing missile. Then, approach the door and blow the Super Hulk lurking in the doorway.

Next, blow the Class 1 Heavy Drillers that come out of the adjoining passageway. They will appear after you destroy the Super Hulk. Quickly aim your weapons and destroy them from long range. This will also take out some Advanced Lifters lurking in the reactor room.

Once you have destroyed them, return to the yellow doors and rescue the hostages. Then, reenter the red door and blow the reactor.

The exit is located near the red door as indicated on the map.


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