No Sensor Left Behind Secret Achievement

This guide will cover the No Sensor Left Behind achievement on Yavin 4, worth 5 Achievement points in the exploration category. The Achievement’s description is as follows:

No Sensor Left Behind: Activated the sensors in all the caves connecting Prowler’s Trail and Verdant Swamp to the Training Grounds.

The achievement is very literal about which ones to activate specifically, there are 5 caves with connections to Prowler’s Trail or Verdant Swamp from the Training Grounds, and each one has exactly one sensor in them:

• Sensor Aurek
• Sensor Besh
• Sensor Cresh
• Sensor Dorn
• Sensor Esk

Note that these are NOT any of the sensors actually INSIDE Prowler’s Trail or Verdant Swamp that are used for the Daily and Story Missions. These are unique. Prowler’s Trail and Verdant Swamp each have both a northern and southern cave, side-by-side eachother that lead out to the Training Grounds, all 4 of which combined contain 4 of the 5 sensors.

The final sensor is inside “The Breaking”, a larger cave system located in between the caves seperating Prowler’s Trail and Verdant Swamp, accessed from the Training Grounds. This is the same cave that houses the Elder Lurker for the daily “Pushback”, in fact you can see the bone pile and where the Elder Lurker spawns from the sensor.

The positions of each sensor can be more easily visualized from the Training Grounds map, as each tunnel has it’s own marker on the map.

Our interactive maps on the website also contain the locations of these sensors, marked with the following symbol:. This is not to be confused with a brighter symbol of identical shape, used to denote the discreet locations for enemy faction flags during the Faction Espionage Achievements. The Sensors are Legacy Wide, so ones you’ve already gotten can’t be re-found – and a hidden quest with the name of the sensor should be picked up and completed in your chat log when you interact with each. Good luck!

SWTOR Yavin 4 Interactive Exploration Map