Here is the full list of all 9 AKER FERN achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
NEW_ACHIEVEMENT_DESC_2_7
NEW_ACHIEVEMENT_DESC_2_4
NEW_ACHIEVEMENT_DESC_2_3
NEW_ACHIEVEMENT_DESC_2_2
NEW_ACHIEVEMENT_DESC_2_6
NEW_ACHIEVEMENT_DESC_2_8
NEW_ACHIEVEMENT_DESC_2_5
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