Rockin Research

During Stage 6 of the Researchers Under Fire: Titan Lockdown event, a cave spawns with boulders blocking it. Make sure to tag all boulders as these count for and are the easiest way to get your achievement.

Many people can be confused trying to figure out how to do this achievement. Typically, we have to join a big raid to proceed to the further stages, and it is just a brainless zerg. For those like me who had some issue in finding these kind of boulders, here is the description.
After an event "Killing fauna", stay at the big cave. The event is #6 and is called Cage Cracking. The cave entrance has targetable boulders which cover the entrance. No need to click or carry anything. Target like normal mobs and AOE. They are usually dead in 3 seconds (not joking) and easily missed.
I got 12 points every event on my mage with Arcane Explosion.
On a Stage 4 (I think) the big big boulders in the middle of the tasks area will be targetable. Kill. Get extra +2. Why not:)

Cant be soloed in TWW. Time runs out while trying to gather 50 artifacts for the next stage. So you cant even reach the stage where you can collect the boulders.