A good seed to use is 1.4.1.1727315148
Use position tracking items aka the GPS or Cell Phone
The coordinates for the trapped chest is at
154' East
158' Underground
When you get here, preferably switch to a loadout with basically no defense at all. You want to try to kill yourself by opening the trap, which gives you the achievement.
Credits to Hokayo and his friend who made this great guide on Steam!