The Eternian Energy Cannon is a Huntress weapon. It is awarded for defeating the Old One in the Crystalline Dimension on Nightmare difficulty as a Huntress. Similar Boss Rewards These are other boss rewards for defeating the Old One in the Crystalline Dimension on Insane and Nightmare difficulty as other classes. Apprentice - Eternian Staff Huntress - Eternian Energy Cannon Monk - Eternian Spear Squire - Eternian Greatsword Related Rewards Crystal Gun - Easy, Medium, Hard, or Insane difficulty reward for the Crystalline Dimension. Tips This weapon has problem hitting Old one's belly crystal. Pawn shot is best weapon for this boss. Weapons Apprentice Weapons Squire Weapons Huntress Weapons Monk Weapons Old one Retrieved from "https://dungeondefenders.fandom.com/wiki/Eternian_Energy_Cannon?oldid=86914" Categories: Weapons Weapon DLC Boss Rewards Map Rewards Crystalline Dimension Guns Rewards Quest for the Lost Eternia Shards Community content is available under CC-BY-SA unless otherwise noted.