
Explosive Avoidance
Follow the trail of the Master of Peace and his saboteur pursuer. Head to the area in Dry Top where the clues end. Meet your friends where the investigation has led you. Speak with Taimi. Investigate the last known sighting of the Master of Peace. Defeat the saboteur Aerin. Kill the tendrils blocking Taimi from the vine gate. Catch the saboteur Aerin before he finds the Master of Peace. Defeat the saboteur Aerin. Use a shattered Sun crystal to break the saboteur's shield. (Defeat the saboteur Aerin.) Saboteur Aerin Speak with Marjory. Search the saboteur's body for clues.
Talk to Taimi to open up the path. After your first encounter with Aerin, kill the tendrils so that Taimi can clear the path and the group can follow the fleeing sylvari. As Kasmeer opens up portals, pass through them to continue the pursuit. Attack Aerin until he starts protecting himself within a bubble. Pick up sun crystals and dash into him to break the protection. Aerin will then escape, and a cutscene with the Master of Peace will start. In the final battle, ignore the tendrils at the bottom and go up on one of the platforms to attack. As you approach him, he will randomly jump away to other platforms. You can follow him by using the various crystals spread throughout the area. However, with Aerin constantly throwing out explosives, it is easier to stay at a longer distance to avoid the explosives and kill him using ranged attacks. Note that you will be in combat all the time, so you will have to equip a ranged weapon in advance. Once he is dead, talk to Marjory and inspect Aerin's body to complete the instance. Note: When Aerin activates his shield and becomes invulnerable, you'll need to pick up a sun crystal. Then be sure to face Aerin and target him, and use the Light Dash skill without interrupting it. When the dash ends Aerin will become vulnerable again. The skill is finicky so if you interrupt it or just use it without targeting Aerin, you will be pushed back and he will remain invulnerable. During the final battle this may take a few tries - picking up multiple crystals can help with this.