Hello!
This guide contains World Seed that will help you to easily find the Dead Man's Chest and get the "Dead Men Tell No Tales" achievement.
Screenshots with location (and coordinates) are also included.

In order to get the achievement, you have to try to open the Dead Man's Chest like any other chest and then die within 10 seconds. When you try to open the chest, it will trigger all traps around and that should kill you instantly. ACHIEVEMENT WORKS ONLY IN SINGLE MODE.

The World Seed works for both Classic and Journey mode (I use Journey as an example in screenshots)

Create a new world and click on the "Seed" area. This will open a window, where you can type the seed.



Copy this seed: 1.4.1.1727315148
Paste it here and click "Submit":



All in all, it should look like this:


Click on "Create" button.

Once you create the world and enter it, you will want to start looking for the chest.

The exact coordinates for the chest location are:
154' East
158' Underground

Here is the location of the Dead Man's Chest on a map:


And here is how it looks like in game:



Get to the "room" and try to open the chest. Remember that your character has to die within the next 10 seconds (and will most likely die the moment you try to open the chest). Achievement should pop-up immediately after death.

User Scarecrow provided a very useful tip, that might help players who use Linux and encounter any problem with using the World Seed:

I hope you will be able to easily earn the achievement with this guide. If you have got any questions or encounter a problem, please write a comment below and describe it, I will try my best to help you. Steam is the only place where I uploaded this guide. Please do not copy. Thank you.