Here is the full list of all 44 RefRain -prism memories- achievements.
Made the bear dance on Tee's desktop.
Cleared Central 4 on the Easy difficulty level.
Displayed the music room.
Saw the normal ending.
Cleared Central 5.
Cleared Central 5 on the Normal difficulty level.
Reach a score of 500,000,000 or more.
Defeat a boss while it's knocked back with a 4-stage multiplier M.E.F.A2.
Cleared Central 4.
Acquire 100,000 Prisms in a single game.
Exited the game from the title screen.
Played as Tee.
Played as Mews.
Displayed the log archive.
Cleared Central 3.
Reach a score of 50,000,000 or more.
Cleared Central 2.
Cleared Central 1.
Cleared the tutorial.
Started the game.
Cleared Central 5 on the Advanced difficulty level.
Cleared Central 5 on the Extreme difficulty level.
Cleared Central 5 on the Re:Normal difficulty level.
Cleared Central 5 on the Re:Advanced difficulty level.
Cleared Central 5 on the Re:Extreme difficulty level.
Cleared Central 5 with Miria, Tee, and Mews.
Cleared two laps of Central 5 with Miria, Tee, and Mews.
Saw Miria's good ending.
Saw Tee's good ending.
Saw Mews's good ending.
Acquire 999,999 Prisms in a single game.
Destroy 10,000 enemies and bullets in a single game.
Convert 1,800 or more bullets with a single Concept Reactor
Reach a score of 2,500,000,000 or more.
Reach a score of 5,000,000,000 or more.
Clear the Advanced difficulty without losing a ship.
Clear the Extreme difficulty without losing a ship.
Clear the Re:Advanced difficulty without losing a ship.
Clear the Re:Extreme difficulty without losing a ship.
Destroy a total of 200,000 or more enemies and bullets.
Acquire a total of 200,000 or more items.
Acquire a total of 6,000,000 or more Prisms.
Convert a total of 300,000 or more bullets with a Concept Reactor
Exceed ten hours (36,000 seconds) of Dive Time.