Do you need to drain the poison in the Workshop Union in Lies of P? This area is also known as Venigni’s Workshop and it is home to the Puppet of the Future. If you have climbed down to this massive boss, you have probably noticed a massive pool of poison or corruption. Standing in it is not the best idea as it will severely damage you over time.
If you want to fight this boss on fair terms, you will need to drain the poison in the area. Unfortunately, that is much easier said than done and requires you to travel quite a distance from the start of the area. This guide will show you how to drain the poison in the Workshop Union in Lies of P.
How to drain the poison in Lies of P
If you want to drain the poison in the Workshop Union in Lies of P, start by traveling to the Workshop Union Entrance Stargazer. If you already, have it unlocked, you can go ahead and jump to the Workshop Union Culvert Stargazer.

From the Workshop Union Entrance Stargazer, go up the stairs and head straight through the opening. From there, hang a left down the hallway and back outside. Follow the path around and defeat the puppets. Drop down into the room below. In this room, you will need to defeat multiple mannequin-style puppets. After defeating them, follow the path forward through the factory to where the floor caves in.
You will now be in a room with a larger, mini-boss-style foe with two shields. Run to the other end of the room and up the stairs. Follow this pathway around to where there is a drop. Here, you will find the Workshop Union Culvert Stargazer.

From this Stargazer, follow the path to the right of the pipe. You will run into a hallway with constant burning ball obstacles rolling down it. Run in the direction the balls are coming from using the alcoves to avoid getting hit. Keep making your way up the hallway until a puppet breaks through the wall on the right. Go down this newly opened pathway. This will lead you outside.

Head to the left and go through the doorway near where Red Fox and Black Cat are standing. Follow this path until you see a red pipe on your left. Go into the pipe and watch out for the mannequin puppets. Follow the pipe to an opening on the left near where it curves up. Take that left path and you will see an alarm light blinking with a wooden wall on the other side.
A larger puppet with a shovel will break down the wooden wall when you get close. You can fight this puppet or run around it to reach the lever at the end of the hallway. Pull this lever to drain all of the poison out of the boss arena. Now you can safely fight the Puppet of the Future boss.