Here is the full list of all 37 CHRONO CROSS: THE RADICAL DREAMERS EDITION achievements.
Defeat Dario and reforge Serge's Sea Swallow into the Mastermune.
Create a piece of rainbow armor.
Create a rainbow weapon.
Defeat Dark Serge at Fort Dragonia.
Use Lynx's unique level 7 tech, Forever Zero.
Get 10,000 points in the compass roulette mini-game.
Use Harle's unique level 7 tech, Lunairetic.
Complete the Grand Slam.
Defeat Lynx at Fort Dragonia.
Re-visit the labyrinth in Fort Dragonia—this time, for real.
Triumph in 500 battles.
Flee from a battle.
Successfully feed the dragons 100 times in the dragon-feeding mini-game.
Wake up after having cleared the labyrinth for the first time in the dream.
Use the Dragon God relics at the Dead Sea Ruins to enter the Sea of Eden.
Arrive in Chronopolis, the Time Fortress.
Defeat FATE, the mother computer of Chronopolis.
Obtain Chrono Cross, the rainbow-aligned Element.
Defeat the evolved form of the Time Devourer.
See the good ending.
See the bad ending.
See Ending 1: The Developers' Room.
See Ending 2: The Acacian Empire.
See Ending 3: The Magical Dreamers.
See Ending 4: The Shop Staff and the Three Unlikely Heroes.
See Ending 5: The Rebirth of Marbule.
See Ending 6: The Last Stand.
See Ending 7: The Viper Orphanage.
See Ending 8: The Dark Fate.
See Ending 9: The Dragon God's Revenge.
Use Serge's unique level 7 tech, Flying Arrow.
Use Kid's unique level 7 tech, Hot Shot.
Use the triple tech Delta Force.
Use the triple tech Z-Slash.
Use the Chrono Cross item to recruit all party members.
Collect all 15 types of window frame.
Obtain 99 level-growth stars.