As it stands, only defending the Temple of Lyssa grants the trait unlock. Defending Arah or the other temples does not.
How are we supposed to unlock the XIII trait (and I suppose the XII for newbies) when it’s all but impossible to ever do the events? Defending a temple should be encouraged, but as it is now it’s far better to let it fail because you get better loot, more events and the chance for a trait unlock.
Add to that the fact that the megaserver system means the defend events never EVER fail…
I get there is the option to spend gold on the traits, but when it costs 120 gold plus 800 skill points to do so for all classes, it’s not really a viable option to do them all this way.