Honestly I got bored and quit halfway through...
I guess it just wasn't for me, but it didn't feel epic at all. We ran into a tunnel, killed a lot of Karka which spawned on top of you or were invisible while it killed you cause of the lag. Then you ran outside, and killed even more Karka. Really, other than tiny random things like shooting a tree instead, you were really just killing the same three enemies over and over and over (really the same enemy over and over, just different sizes). I quit when you had to take out reinforcements the second time. I mean really? That bar filled so slowly, and there was no real challenge.
If people liked this event not sure how Anet could possibly make an event people don't like. All they need to do is just spawn loads of enemies over and over with some thin plot beneath.
Nothing against the game, obviously it's free content so I don't feel let down, I just left. If people liked the event I'm glad, anything to keep more people playing the game is great. Just not my cup of tea I suppose.