Daymare 1998 - "Problem solving" Trophy

While still in the sewer during Chapter 3 there will be a room you come across with a barrel in it that has a corpse melting inside. It is unclear what exact reference this is trying to make, but interacting with the barrel by pressing Cross will trigger a unique dialogue and the trophy to unlock. This is before you make your way to the lower level of the sewer to escape after lowering the water. There is no prompt letting you know that you can interact with the barrel. Below is a video showing the location of the barrel to interact with.