Ruined Idol is a new in-game achievement for season 1.5 of . The description is rather vague and cryptic, and just says you need to destroy a statue, «When Eternal Night falls on New York.» Thankfully, this can be completed in the new map, Empire of Eternal Night: Central Park.
The only downside is it has to be done in Quick Play or Competitive, potentially taking attention away from taking the objective.
You also need to be the first of the entire 12-person lobby to snag the achievement before anyone else. The Central Park map is a huge focus of the first season.
Most event missions have an option that only counts while on it or the previous Eternal Night: Midtown. Completing everything will grant the free Carved Traveler skin for Groot in .
With that event being so prominent, the Ruined Idol achievement was a bit swept under the rug. Still, it is worth completing for those that want to experience all the content.