Expansion: Walkthrough: Holodeck Mission - Klingon Compound

You start in a small room with the holodeck controls behind you and some barrels in front of you.  Your weapon are the phaser and the compression rifle.  Exit the room and take a left.  There is a Klingon patrolling at the end of the hallway.  He should take about four shots to kill.  When he is dead, take his gun.  When finished, take a left and go down the hallway until you come to a rather square room.  To the left is a button you need to press.  The button looks like a red key (see screenshot).  Once it is pressed, turn around and collect the isodisium to the right.  Continue back down the hallway and go through the door with the three green dots.  There will be a Klingon to your left.  Shoot him.

Go forward through the next door until you emerge outside.  Here you will find five Klingons you need to kill, two are at your left, one is hiding beside some boxes towards the front left, and there is one on the balcony above you.  The last Klingon is patrolling around.  Once they are dead, walk to the far left corner and collect another isodisium.  Once you have got it, look toward the boxes and scan toward your left.  You should see a health regenerator.  Use it.

Once that is done, head back toward the door you came through.  When you are about half way there, look to your left and you should see a yellow ladder surrounded by a fence with some boxes stacked on the outside.  Climb over the boxes and hop over the fence.  Collect some more isodisium to the right of the ladder, then climb the ladder.  Once you are at the top, follow the walkway along.  At the end of it, look down and you should see a small ledge you can jump on.  After jumping on the ledge, you should see a door to your left.  Go through it.

When you have entered, you should see a way to your left, and one to your right.  Go to the one to the right and look down over part of the compound.  Shoot the patrolling Klingon and then take the previous left.  Continue forward and you will once again see three different ways to go.  Go forward and turn around.  There are two Klingons below you that are monitoring a control panel.  After you have killed them, take a left and collect the isodisium.   Next, turn around and follow the walkway to the other side. You should see another left and right.  Go right and collect some more isodisium.  Take the yellow ladder down on the left.

When down, click on the red button.  Take a left and follow the hallway along.  Next, go right.  You will find five Klingons you will need to fight in the next room.  When they are deceased, continue on until you come across a red force field.  Going right, collect some more isodisium and then press the button on your left.  Go back and continue through where the red force field was.  Take a right and battle two more Klingons.  Get health and proceed to the elevator like contraption.  It should beam you to the next section of the level.

Continue through the next door with the green dots.  There are four Klingons waiting for you.  One on balcony and three down below you.  Remember the one Klingon on the balcony?  There is a walkway over there.  Follow it and take a left.  After killing the next Klingon, continue forward on some pipes.  Collect the isodisium and go left on the walkway.  Jump over the rail and press the red button on your left.  Next, go through the green door and kill another Klingon.  Then use the health regenerator found in the room.  Now, continue all the way back to the green door that originally brought you to this large room.  Go through the door and take a right, continuing onward through the Jefferies Tube.

Take the yellow ladder down.  At the bottom, take the next Jefferies Tube you see.  Go forward and shoot the patrolling Klingon from inside the Jefferies Tube.  Emerge from the room and kill the Klingon you find at the other side of the force field.  He was monitoring a button you need to press.  After pressing the button, turn around and you should see an open "hole" in the ground.  Go down it and go through the next Jefferies Tube collecting the isodisium.  Once out, go up the next ladder.  You should be surrounded by a red force field (quite a popular Klingon decoration).

Collect the data pad from a table in front of you and press the two buttons you see.  Three Klingons will beam in.  Fight and kill them all.  Turn around and run to the door on the other side of the room.  The mission will end abruptly.