Quake II/Upper Palace

Level objective
The main objective for this level is first to find the Data Communications Laser CD and take it back to the Lower Palace to reprogram the Data Spinner, then to bring back the Data Spinner and use it to "Neutralize the Strogg Leader's Communication System" and finally to go through the newly opened doorways to the Inner Chamber. A secondary objective is to locate the Security Pass, take it to the Force Field Control Room, turn off the Yellow Force Fields and explore the areas thus made accessible. This objective is optional; you can complete the level and the unit and proceed to the Inner Chamber and the Final Showdown without doing any of this. Whether the game was designed this way or the direct path through was unintended but never found during development and play testing is a mystery.

Part 1 - Finding the Data Communications Laser CD
Enter the level from the Lower Palace via the elevator. You will arrive in a room with two doorways opposite you, each guarded by a force field. The Guards in this room will succumb to a couple of grenades or any other fast attack (you have no cover). Follow the red carpet to the left-hand doorway and use the button on the wall to turn off the force field. Through the door is an elevator. Press the button, quickly step on, ride to the top and quickly step off. The red carpet reappears and takes you through a door to a room that turns your path through 180 degrees. There are two Iron Maidens in here. Take them out with rockets or some other weapon, using the blue crystal pillar for cover. Just outside the second door in this room are Guards, another Iron Maiden, and, around the corner, a Gunner. Duck back into the room and retreat to find cover. The hallway beyond the door goes to the right. Try not to open the door opposite as there is another Tank there. Take it down if necessary and follow the hallway to the right. At the end of the first straight section, dogleg to the left, ignoring the door on the right, and fight an Iron Maiden and two Guards. Through a door and a left turn brings you to the Data Communication Laser. Go around it to take the Data CD. A pillar will rise, blocking entrance to a room beyond. You will lower this pillar again by bringing the reprogrammed Data Spinner to this point. Backtrack all the way to the Lower Palace.

Part 2 - Neutralizing the Strogg Leader's Communication System
Return to this level after reprogramming the Data Spinner and follow exactly the same path as before to the Data Communication Laser. Again, go around it and the pillar that rose to block your path when you took the Data CD will fall to let you through. In the room behind the pillar, approach the console which will accept the Data CD and announce that the communication laser has been shut down. In effect, what this means is that the force fields in the doorways that lead to the unit exit have been turned off. You can now proceed to the Inner Chamber. However, most of this level has not been explored, so see also Part 3 below. From the room in which you shut down the lasers, go out, walk to the right around the now non-functional laser and take the first door. Follow the hallway. You will meet an Iron Maiden. You will eventually come to the end of the hallway where there is a computer console on the wall and a lava-flooded room to the left. In the room are Technicians, so dispose of them. Operate the console and a ramp will lower. Go up the ramp and press the button to exit the level and the unit.

Part 3 - Finding the Security Pass
Enter the level from the lower / basement-level entrance from the Lower Palace where there are puddles of shallow water. You cannot get to the area in which the Security Pass is hidden from the upper entrance until you turn off the Yellow Force Fields, which can only be done after the Security Pass is obtained and used. You enter at the foot of some stairs and immediately encounter Guards. Some are on a landing over your head and there is also an Iron Maiden up there, so consider sending a grenade or two after them. When you make it to the top of the stairs, go along the corridor just until a Guard appears at the other end and take him down. Turn around and go back to the stairs and down, watching out for a Technician and dealing with him on the way. The Technician came out of an alcove that has just now opened and there are goodies in there to be collected. Go back up to the corridor and again go along until enemies appear at the far end. There is another Iron Maiden and a Gunner. Either take them out or, for an extra bit of fun, maneuver them into fighting each other in the narrow space and pop off the survivor. Finally, get the to end of the corridor. In front of and below you is an underground area that is best explored later. Above you is a hole through which you will drop from the room in which you will find the Security Pass. To your left is an alcove from which another Iron Maiden will shortly appear. Go to your right.

There are many more Guards to fight, some in a room with exploding barrels that may be dispatched by shooting the barrels. Going back for the Iron Maiden is easier than falling into her lap when you drop through the hole. You will quickly find an elevator shaft. As you take the elevator up, you will pass levels from which a Guard and perhaps a Gunner will take pot-shots at you. It isn't easy to take them out as you rise, but do it if you can. At the top, your progress will appear to be blocked by a force field in an opening outlined by white lights. The color of the lights notwithstanding, this is the Yellow Force Field that you need the Security Pass to turn off. If you explored the hallways in the vicinity of the Communication Laser, you may have come to this barrier from the other side. Tiptoe around the ledge to the other side of the shaft where there is a grille that will slide away to let you through to a second shaft with ladders. Deal now with the Guard and Gunner because you don't want them shooting at you as you climb down. (See also Secrets, below.)

The easiest way to get onto a ladder without falling (in Quake II, not in real life) is to stand on the opposite side of the shaft and jump across to land on it. Descend to the next level down, i.e. the bottom of the first ladder. Here you can fight some Guards, Gunners and Technicians to gain access to a small store of goodies. Return to the ladders and take the second one down another level. Explore and fight the same assortment of Strogg, but here you will find a room with a hole in the floor and some electronic equipment against one wall. In an alcove in the equipment, you will find the Security Pass. Take it and climb down the ladder in the hole, finally dropping down and finding yourself at the end of the long corridor near where you entered the level. Return along the corridor, down the stairs and through the exit to the Lower Palace. You may be accosted along the way by a Technician.

Part 4 - Turning off the Yellow Force Fields
To turn off the Yellow Force Fields, you need to get into the Force Field Control Chamber, which is accessed from the area below the platform around the Communication Laser. You need the Security Pass to open the door. If you are bringing the Security Pass through the Lower Palace, then you will be arriving in the room at the top of the elevator and facing the two openings with switchable force fields. You have already followed the red carpet through the left-hand opening to reach the Communication Laser and get the Data CD. Unless you have departed from this walkthrough, you have not been through the right-hand opening. This opening leads through a swarm of Strogg to your destination.

There are two ways to proceed. One is to shut off the force field in the right-hand opening and fight your way through. The other is to go again through the left-hand opening, where you will meet no opposition. Arriving on the platform around the Communication Laser, you can conveniently shut down the laser with the Data Spinner, as described above, if you haven't already done this. Then, crouch and drop down to the area below. Finding the door to the Force Field Control Chamber isn't hard and when you approach it you will get the encouraging message "Security pass grants access to force field control chamber". There's nobody in there, so just go around some corners to the console and push the button. However, when you come back out, there's nowhere to go but into the door you would have come out of if you'd taken the other path. So, you'll just end up fighting the same throng in reverse. Arbitrarily, this walkthrough will take the first choice. If you haven't turned off the Communication Laser yet, you can just do this on your way to the Inner Chamber after completing all the activities in this level.

So, shut off the force field and turn to the right (but see also Secrets, below). Take down the Guards. Turn left and take down the Gunner at the bottom of the stairs. (More ...)

Secrets
This level has seven (7) secrets:
 * 1) One of the entrances to this level from the lower palace brings you into a room with two exits facing you, both blocked by force fields.  Turn off the force field to the right-hand exit and step through the archway.  Immediately look up and shoot the recessed block in the ceiling.  The wall ahead of you will open revealing some ammo and health.
 * 2) You will come to a short corridor guarded by automatic blasters.  At one end is a small room with a grating in the floor through which you can see the secret goodies.  At the other end, there is a gap in between the walkway and the walls.  You need to jump down this gap and run under the walkway to get the goodies.  An elevator will bring you back up.  You will lose some armor and health in the lava (unless you use up an invulnerability), so don't do this when you are almost dead.
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