Luck > Skills
This mode is supposed to kill you in seemingly random ways. But all the hazards are fixed, so the idea is to slowly work out the correct path and remember the path. It’s basically all trial and error with raging thrown in the mix.
The devs have said this mode is based on the game “I wanna Be the Guy” and “Cat Mario”. It’s meant to be done by a very small fraction of the GW2 population. Those that enjoy that type of “griefing troll” games.