All period 1 elements discovered
ALL_PERIOD_1_ELEMENTS_DISCOVERED89.1%
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Achievements and their recorded unlock rates.
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ALL_PERIOD_1_ELEMENTS_DISCOVEREDALL_PERIOD_2_ELEMENTS_DISCOVEREDALL_PERIOD_3_ELEMENTS_DISCOVEREDALL_PERIOD_4_ELEMENTS_DISCOVEREDALL_PERIOD_5_ELEMENTS_DISCOVEREDALL_PERIOD_6_ELEMENTS_DISCOVEREDALL_PERIOD_2_ISOTOPES_DISCOVEREDALL_PERIOD_1_ISOTOPES_DISCOVEREDALL_PERIOD_3_ISOTOPES_DISCOVEREDALL_PERIOD_7_ISOTOPES_DISCOVEREDALL_PERIOD_6_ISOTOPES_DISCOVEREDALL_PERIOD_5_ISOTOPES_DISCOVEREDALL_PERIOD_4_ISOTOPES_DISCOVEREDALL_PERIOD_7_ELEMENTS_DISCOVERED