Species Location Weapon Abilities The glacier troop is an enemy in The Precursor Legacy that operates the ice drillers (battering rams) at Snowy Mountain. They work as excavators, using the ice driller to forcefully break the ice encasing the Precursor drums for Gol Acheron and Maia Acheron. They only participate in combat after the small group of surrounding lurkers have been defeated. They appeared in the mission "Stop the 3 lurker glacier troops", in which Jak and Daxter had to defeat all three in order to obtain a power cell.