First upgrade
ACH_FIRST_UPGRADE77.9%

Achievements and their recorded unlock rates.
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ACH_FIRST_UPGRADEACH_SECTOR_1ACH_PEARLACH_GOLD_CHESTACH_CHALLENGEACH_AMETHYSTACH_SECTOR_2ACH_TOPAZACH_SECTOR_3ACH_BOSS_SLAYERACH_SECTOR_4ACH_DIAMONDACH_HALFWAYACH_SECTOR_5ACH_HALF_UPGRADESACH_SECTOR_6ACH_MINI_BOSSACH_SECTOR_7ACH_SECTOR_8ACH_SECTOR_9ACH_VICTORYACH_SECTOR_10