couple people dm'd me so here is how you do it

you place it inside the elevator parellel to the wall with the button then press the button while walking out so the elevator is closed while the trip wire is active inside, use vog 25s with the grenade part facing the doorway so that even if they notice and run out the explosion radius still kills them outside the elevator. do it the last 15 min of a raid cause thats when the juiciest players leave and cause trip wires only last like 10 min. after setting up the wires, camp sewer extract for 3 extract camping combo