It is recommended to first get somewhere between 8,000 and 12,000 points each, so that you have enough points to open the necessary doors, turn on the power and get Jugg. You can then attempt to buy the VR-11 from the mystery box. Yes, it sucks but you need it for the last step. You can also go on to upgrade your weapons which you'll also need for the Final Step.
Once all of this is done make a crawler and you're good to go.

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Run on over to the PHD Flopper room, go downstairs and to the metal door that you cannot open and you'll hear original Zombies cast are traped. It is up to you to help get them out.

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Step 1 - The Fuse
Located on either one of the desks upstairs from the Time Machine or in the corner next to the Fileing Cabinet.

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Step 2 - The Generators
This can be done in ANY order.
Generator 1 >> Located right beside you.
Generator 2 >> Located through the winndow at the back of the Stamina Up Perk Machine.
Generator 3 >> Located in a small gap to the right of the bridge connecting the open area at the botom of the lighthouse to the downstairs area of the back of the ship.
Generator 4 >> Located at the front of the ship, look down the back of the ship at you'll see the light its best to get some Semtex for this one (located on a wall at the top of the stairs from Jugg).

Now Go Back To The Time Machine for further instructions.

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Step 3 - The Vodka
You need one person to cut it and one person to catch it (Hold X and run into it when it drops to catch it).
It can spawn in any of the following locations:
Location 1 >> The railing outside the lighthouse above The Flopper
Location 2 >> The railing outside of the Flopper room, one person needs to be in the open area outside of the bottom of the lighthous for this
Location 3 >> The railing outside of the power room
If it doesn't appear in these locations your just gonna have to look around for it
Once caught go back to the Time Machine and at the base of the stairs to the left of the metal doors are Mailing Tubes, hold X to give them the Vodka.

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Step 4 - The Lighthouse Dials
Set Yellow to 2
Turn Blue, until it makes Orange 7
Set Purple to 6
Turn Orange, until it makes Blue 4
Set Yellow to 2

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Step 5 - The Radios
This needs to be done in the following order.
V >> On top of a cabinet In the room under the Power Room
R >> On A Barrel In Room At The Back of the Lighthouse
I >> In a container at the back of the boat next to a Zombie Window just after opening the Container doors
L >> Is Under The Stairs in The Time Machine Room

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Step 6 - Steering Wheel & Levers
Located in the power room on the boat.
Lever 1 >> Pull
Lever 2 >> Do NOT Pull
Lever 3 >> 3 Pulls
Steering Wheel >> Turn to the 5 o'Clock position

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Step 7 - Foghorns
This needs to be done in the following order.
1 >> Next to the water at the base of the lighthouse
2 >> Round the corner from the Ice Slide in the lighhouse in the corner
3 >> At the base of the lighthouse
4 >> In the open area of the ice slide

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Step 8 - The Golden Rod
Right if you have followed the suggestions at the start this should be Easy-ish, first make your crawler follow you to the bottom of the lighthouse and shoot it with the VR-11 (If you don't have it, go to the random box and try to get it). Now You Have To kill the human before he reaches the top of the lighthouse, once this is done run back down the stairs and grab the Golden Rod. Head back to the time machine and give them the Golden Rod through the Mailing Tube. Afer the talk the fuse starts acting up, knife it and Acheivement Acheived! The Death Machine should pop up beside you grab it and it is the Wander Waffle.