That Thing Has Legs Achievement
That Thing Has Legs25
Found and killed a varterral.
This is missable. In order to get this quest, you MUST complete the main story quest "Blackpowder Courtesy", which can be picked up from the writing desk in your estate at the start of Act II. After competing this quest, go to Merrill's home and speak to her to begin her companion quest "Mirror Image".
NOTE: She must be in your active party in order for you to start this quest. Next, travel to Sundermount and talk to Keeper Marrethari to start "Honoring the Fallen". Take the path to the far left of the Keeper to enter the Varterral Hunting Grounds, where you will eventually encounter the Varterral.