NOTE: The map in the main walkthrough uses pink arrows to indicate the route from the third switch, back to the first switch (i.e., the one you used to trap the cyborg), then on to the KEY BIT he drops.

After gassing the second cyborg, as shown in the previous section, we now need to retrieve the KEY BIT he dropped. Flip the third switch again to pump the poison gas from the other room back into this one and unlock the exit.

Roll and run through the door opposite the switch into the next room.

Exit through the door on the right, which takes you back to the FOUR-WAY INTERSECTION.

Go through the doorway on the right (with the yellow "Caution" sign).

Take the next right down the ramp...

...to the first switch, under the grate. Use this switch again to re-open the doors above.

Return up the ramp and turn right...

...then right again...

...into the room where the cyborg died. Pick up the KEY BIT (RIGHT) (21) (239/239) he dropped. You should now have two halves.

If you obtained all 239 pickups in the game, you'll unlock the "Hoarding Order" achievement/trophy. Well done!
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