ACHIEVEMENT - HOW TO UNLOCK Challenge Master (10 points) - Solved ten challenges. Fearless Explorer (10 points) - Defeated ten encounters. Dragon Slayer (20 points) - Defeated Nicol Bolas in the revenge campaign. Avatar of Slaughter (10 points) - Won a duel when an opponent controlled no creatures. Beast Within (10 points) - Won a duel controlling a creature with at least 10 power. Master of the Wild Hunt (10 points) - Won a duel controlling at least ten creatures. Savor the Moment (10 points) - Won a campaign duel with an opponent's library empty. Flawless (10 points) - Won a campaign duel with 20 or more life. Praetor Slayer (10 points) - Solved the Say Your Praetors challenge in all five ways. Archmage (15 points) - Unlocked 30 cards for one deck. Jack of All Trades (15 points) - Unlocked a card for each of ten different decks. Otherworldly Journey (10 points) - Won a duel on Xbox LIVE. Maelstrom Wanderer (10 points) - Won a Planechase campaign duel. Two-Headed Giant (10 points) - Won a Two-Headed Giant duel. Last Mage Standing (10 points) - Won a 3-player, 4-player, or Two-Headed Giant duel. Mythic (10 points) - Cast a mythic rare card. Magic - The Puzzling (5 points) - Solved a challenge. Time of Heroes (5 points) - Defeated an encounter. Memory Adept (5 points) - Entered the deck manager. Sky Summoner (5 points) - Defeated Talrand in the campaign.