Cargo Elevatorfuse, two keys and Many Ways

What you see

The Assembly Line is a tall hall with a conveyor belt along its north wall. The cargo lift at its west end only runs with two keys in its console: a green key locked in a white room next to the lift, and a purple key in a passage under the office above the hall. A fuse hangs from a small crane over the belt, out of reach.

You need the fuse for the door to the gallery round the lift, the gallery for the green key, and the office for the two monkey bars that open the key hatches. The Goop Gun player does the climbing and hangs on the bars; the Hook Gun player pulls the fuse and both keys in with the hook.

How it works

• The crane chain on the east catwalk (pin 4) lowers the crane 4.7 m while it is held fully pulled. Let go and it springs back, and the crane rises again.
• The Hook Gun reaches 8 m. With the crane up, the fuse is 11.9 m from the hall floor below it: too far. With the crane down it is 7.1 m away, so the Hook Gun player can pull it in from the hall floor right under it (pin 2).
• Put the fuse in the slot by the fuse door (pin 5): the door opens 2 s later and stays open. The fuse locks into the slot and cannot be taken out again.
• The fan in the north wall (pin 3) is the way into the duct up to the east catwalk. Goop on it stops it; only then can the Hook Gun player hook it. While the hook holds it, the stopped fan swings aside and the opening is free. Let go and it closes again.
• The pressure plate on the grey block (pin 10) takes any weight: one player or one goop blob. 1 s after that the purple plank (pin 11) folds down into a bridge from the ledge behind the plate to the only office window with no glass (pin 12). With the plate empty it folds back up and covers that window.
• Monkey bar 1 (pin 9) is on the office's west wall. Jump up, grab it and hang: while it is all the way down, the hatch at the north side of the lift gallery is open. Let go and it shuts.
• Monkey bar 2 (pin 13) is in the office's east corner. Held all the way down, it opens the green shutter in the hall's north wall (pin 14) 2 s later. Let go and the shutter shuts at once.
• Behind the green shutter stands a push-pull block: a crate with a container on top, 3 m tall, with an edge you can grab and climb. The hook pulls it; by hand either of you can push or pull it.
• The green key's hatch has a barrier that lets the hook through but not a player. The purple key hangs in the passage under the office, and the Hook Gun player hooks it through a low gap from the push-block channel. So the Hook Gun player takes both keys.
• On the lift, face the console (west): the green key slot is on the left, the purple one on the right. With both keys in, the console lights up and the game saves. Then both of you stand on the lift and pull its two-handled chain all the way: the lift starts.
• Falls don't hurt you in this hall. The game only stops you walking off an edge higher than 1.5 m; crouch to drop down.

Maps

Two top views of the same area, north up, at the same scale and with the same pins. The upper level shows the office, the gallery round the lift and the catwalks. The lower level cuts the office floor away and shows the hall floor, the conveyor belt, the duct behind the fan and the passage under the office.

Upper level

123456789101112131417185 m

1. 1Start: lower corridor (both of you start here when you pick 3-2)
2. 2Fuse on the crane: hook it from the hall floor right below
3. 3Fan in the north wall: the way into the duct
4. 4Crane chain on the east catwalk, at the top of the duct
5. 5Fuse slot and fuse door
6. 6Stairs up to the gallery round the lift
7. 7Gallery, north side: stand here for the green key
8. 8Green key in the white room, behind the hatch
9. 9Monkey bar 1 (office, west wall): opens the green key's hatch
10. 10Pressure plate on the grey block
11. 11Purple flip plank: a bridge while the plate is weighed
12. 12The office window with no glass
13. 13Monkey bar 2 (office, east corner): opens the green shutter
14. 14Green shutter, with the push-pull block behind it
15. 17Gap in the gallery rail, right above the lift's gate (Many Ways)
16. 18Cargo lift: key console and two-handled chain

Lower level

1351014151618195 m

1. 1Start: lower corridor (both of you start here when you pick 3-2)
2. 3Fan in the north wall: the way into the duct
3. 5Fuse slot and fuse door
4. 10Pressure plate on the grey block
5. 14Green shutter, with the push-pull block behind it
6. 15Purple key, under the office floor
7. 16North end of the push-block channel: hook the purple key from here
8. 18Cargo lift: key console and two-handled chain
9. 19Doorway under the plank: blocked, but the way back out of the passage

The note on the fuse box points at the crane:

Stop hanging fuses in weird places when you go off duty, Mark!!! We get enough puzzles in our lives.

Where to find this document

Solution

Many Ways: start the lift without the fuse

Many Ways unlocks 2 s after the lift starts, but only if the fuse slot by the fuse door is empty at that moment. The fuse locks into its slot and the door never closes, so once the fuse is in, Many Ways is gone for this run. Decide before step 4.

Without the fuse the stairs to the gallery stay shut, and the green key can only be hooked from the gallery: from the lift floor it is 8.9 m away, more than the Hook Gun's 8 m. The gallery has one opening towards the lift: a 2 m gap in its inner rail right above the lift's gate (pin 17). The gallery floor there is 4 m above the lift floor.

Not in the game files: exactly where the game accepts a goop blob or stack at the grey block, under the fan and on the lift floor. The files give the heights used here, not the goop placement checks.

Not in the game files: whether starting 3-2 again from the checkpoint menu puts a used fuse back on the crane.

Common mistakes

• Putting the fuse in when you want Many Ways. It can't come out again.
• Hooking the fan before it is gooped. The hook only catches it while goop holds it still.
• Letting go of a monkey bar too early. The hatch and the shutter shut as soon as the bar comes up, and the shutter shuts at once.
• Recalling all your goop while you are in the office. The plank folds up and covers the window, and the plank is the way back out.
• Trying to hook the fuse from the catwalk or with the crane up. It is out of reach from both; only the hall floor right under the lowered fuse works.
• Trying to walk into the passage under the plank (pin 19). A barrier fills the lower part of that doorway; the striped bar on top is a ledge for climbing back out.

Achievement

Onwards and Upwards

Activated the Cargo Elevator

How it unlocks (spoiler)

Both of you stand on the cargo elevator (3-2 The Assembly Line), then pull its chain all the way.

Items: FuseGreen keyPurple key

Walkthrough 3-2: The Assembly Line

Both players unlock it67.8% of Steam players

Many Ways Missable

Activated the Cargo Elevator without using a Fuse

Start the cargo elevator (both of you on it, chain pulled all the way) while the fuse slot at the fuse door is empty. Never put the fuse in: it locks in place and the door stays open. Without the fuse door, the Hook Gun player gets up to the gallery for the green key over a goop stair on the lift floor, through the gap in the rail above the lift gate. The Cargo Elevator page has the whole route.

Items: Fuse

Walkthrough 3-2: The Assembly Line

Both players unlock it4.5% of Steam players