@cpt-idaho you can still do the achievements through the OOS voyages. When they removed the world event they added a new ghost fleet voyage that is given randomly at highest level.

Firstly you need to be level 75 in order of souls. Then you can actually tell if the voyage you got is going to be the burning blade by using the in game sorting system to tell if you got the newer ghost fleet voyage or the older one(the game sorts things in your inventory chronologically).
Purchase a vault voyage and a ghost fleet voyage. Look at your quest inventory. If the ghost fleet is on the left of the vault that is the old voyage and will not give you the burning blade. If it is on the right side of the vault it is the new voyage and will give you the burning blade.

I noticed if she gives me an old voyage, she will continue to give me an old voyage until voyages reset, so I was leaving and starting a new ship until I got the voyage I wanted instead of waiting or sailing to a different outpost.

I think instead of rng people should just be able to select one specifically to do as a OoS voyage

those of us that completed it with the flameheart event had massive opportunity to do it all the time

Imo people shouldn't go through an rng process like that for completions, as someone like me didn't have to

also didn't have a level requirement

@cpt-idaho I believe higher-level OoS Ghost Fleet voyages have a chance of the Burning Blade spawning.