I like the update so far - the Fort of the Damned itself not only brings all of the server to one place, but is really a pain to finish.
First of all you have to gather all flames, what takes about one hour (going to devils roar and to the storm for red and white, also you have to fight another player, maybe chasing him a long time). This makes it almost impossible to gather all flames on your own in the first place.
Afterwards there will be lots of PvP on the Fort of the Damned, because the whole server is lured to one point on the map. Completing it takes about one hour aswell, so you will be busy for at least up to two to three hours for only one run.
For achieving "Conquering the Damned" you need to repeat that process for 50 times. The problem is, that the ritual skull, which you need to activate it, is part of a timed event, meaning that you have one month to finish the fort achieviement, forced to do it more than two times per day, what in my opinion sounds a bit harsh.
You lose all flames if you are sunk, what is very possible because of the big PvP part of this event and it takes hours to finish one run of 50 for which you have one month and this negates the fun part of this event in my opinion.