The Long Way Around
The cavern entrance is located east of Vesper Bell Waypoint around the center of the triangle made up of three small islands in Terzetto Bay. The entrance can be seen by looking to the south-east at the bottom of the shallow bay.
You will have 5 minutes to deactivate the six Asuran Data Pad (as the 1st pad will reset in 5 minutes), dispersed throughout the cavern, mostly around floor level, with the first two being high on the left wall of the entrance tunnel. Deactivating all six will open the gate and allow you to reach Scholar Fryxx and the Grand Chest next to him, earning the achievement. You will need to deactivate all of them while avoiding getting hit by the Risen Hands and dead fish. If you are hit by a hand or fish, you will have the effect Covered in Corruption applied to you and you will not be able to active any Data Pads, so you will need to go back to Explorer Camelia to have it removed.
The cavern itself is roughly in the form of an L-shaped tunnel which turns left towards the Gate. The Risen Hands are located on the floors, walls and ceiling of the cavern; sometimes hidden behind columns, and both they and the fish are immune to damage and cannot be destroyed. The greenish substance shot by the Risen Hands explodes into an AoE on contact and could end up contaminating you even while hiding behind columns, so it is best to keep moving to avoid the slow-moving shots, as the damage is negligible and the shots can be blocked, such as with aegis. However the contamination from fish can not be blocked so try to give them as wide a berth as possible.
- Completing this Mini-dungeon is required in order to obtain Tuning Instruments for Astralaria IV: The Cosmos and Fryxx's Souvenir for Kamohoali'i Kotaki III: Carcharias.
- After interacting with each data pad, a dialogue menu opens, and you must select the first option. It's extremely hard to do this while moving, as it's extremely unlikely that you'll avoid getting hit while standing still to use the menu. You also have to actually press Leave after deactivating instead of just swimming away for it to deactivate. If it is properly deactivated, the Data Pad can't be interacted with anymore and stays inactive for 5 minutes.
- Mesmers can be used to quickly and safely get to difficult data pads. Have them put a portal by the data pad, swim to you and drop the other portal so you aren't tagged with the poison.
- Thieves' Ink Shot is good for Asuran Data Pads that are surrounded by dead fish corpses.
- It's a good idea to go through the cavern once or twice without worrying about being hit, so as to locate the Data Pads and Hands, devising a plan of approach to locate the holes and side passages which can reduce your exposure. Also, having some friends who will trigger the Hands to shoot them before you safely advance to deactivate the Pads can be a good idea as well.