1. One Deck Dungeon Achievements
  2. Defeat the Hydra achievement
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Defeat the Hydra achievement in One Deck Dungeon

Defeat the Hydra

Survive the Reef and defeat the Hydra.

Defeat the Hydra0
Online/Offline - These achievements can be obtained in either an online or offline game mode.Single Player - These achievements can be obtained by a single player.

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