Gates of Maguuma Achievements

[Anastasia Avalon.6908]

So I started playing Season 2 with a new character and noticed we can do the achievements now the first time through, (About time!) I did get hit with any Static Discharge in Disturbance in Brisbane and in Cornered, I was able to complete Opportune Moment, but not for Explosive Avoidance I did not get hit with any timed Blasts  and I completed Dashed Advantage, but did not get credit for those 2. What's going on?

[Dayra.7405]

https://wiki.guildwars2.com/wiki/Gates_of_Maguuma_(achievements)

A total of 10 Gates of Maguuma achievements can be attained. Except for the first one, these achievements can only be earned during a replay of the episode, which is only available on each character after that character has completed the story once.

[Anastasia Avalon.6908]

I know all that, this is my 36th character running through Story line, but this is the first time doing Season 2 with the current character I am playing, and I was able to get No one left behind and Opportune moment, now if the Wiki is correct, I should not have been able to get them, since this is not a replay. I was under the impression that Anet changed it so that we can now get the achievements the first time thru. The little Achievements bubbles were present when I was going through. So if this is the case, I'd like a developer for Anet to explain why I did not get the achievements?

[Inculpatus cedo.9234]

According to other posts, it seem some achievements can be completed during a first play-through.  No one has updated the Wiki, as which do complete and which do not has not been determined.