You, Abella and Henryk exploring Tunnel 7, hoping to find parts so Abella can try and fix the train, but as you explore you Hear giggles devoid of life

Oh and Tanaka is here to, well if he's head is still attached to the rest of his body by the time you find him of course

Note: Tanaka and Needles shouldn't show up until you turn the generator on, Abella will usually prompt the group to turn it on so they can see the parts there looking for better, had to make it like this otherwise Needles and Tanaka appear immediately and there isn't any time to explore before it forces you into a confrontation with Needles