Living nomadically out of a boat with my entire life in about 10 backpacks on my longship. Reaching mistlands and sailing up to a spot that looked interesting only to be swarmed by seekers and lose my boat. With no portal, or materials to build another ship to get back to where I died, it was basically game over.

That's how I play a pseudo ironman challenge in this game. It keeps you on the edge of your seat as one mistake can cost you everything.