Here is the full list of all 20 Our Journeys 2 ~ A Collection of Visual Novels achievements.
Good End (Ixelda the Cursed Queen story)
Bad End (Ixelda the Cursed Queen story)
Good End (Shirina the Witch story)
Bad End (Shirina the Witch story)
Bad End “Erased” (Hack the Core)
Bad End “Mission School Failed” (Hack the Core)
Bad End “Deep Burns” (Hack the Core)
Bad End “Bit Fail” (Hack the Core)
Bad End “Silence” (Hack the Core)
Bad End “Wrong Name” (Hack the Core)
Good End for Chiko (Hack the Core)
Bad End “There's no one here” (Nuri Corruption)
Bad End “Lying is bad” (Nuri Corruption)
Bad End “Deadly room” (Nuri Corruption)
Bad End “Red elevator” (Nuri Corruption)
Full Corruption (Nuri Corruption)
Trapped Forever! (Nuri Corruption)
Freedom! (Nuri Corruption)
End of the Red Cycle (Red or Blue?)
End of the Blue Cycle (Red or Blue?)