It's too late to catch up on this event, isn't it? Wasn't here when you had it.

The event is still on, so I think that you can still catch up. Go talk to Connor Rainsong, there is a link at the news page or you can click here.

You can definitely still catch up. Just hunt down the next news post after you finish a step and don't worry about the additional achievements because the games will be sticking around after the plot ends