Here is the full list of all 46 Digimon Survive achievements.
Completed Truthful route to the next generation.
Beat Fanglongmon Ruin Mode.
Beat Zhuqiaomon.
Beat Azulongmon.
Garurumon reached Mega level.
Floramon reached Mega level.
Beat Ebonwumon.
Labramon reached Mega level.
Lopmon reached Mega level.
Kunemon reached Mega level.
Beat Baihumon.
Beat MegaSeadramon.
Took the Truthful route.
Acquired 100 items while exploring.
Completed the Wrathful route.
Entered the final battle.
Beat Plutomon.
Falcomon reached Mega level.
Renamon reached Mega level.
Dracmon reached Mega level.
Syakomon reached Mega level.
Agumon reached Mega level.
Reached a fork in the story.
Beat Piedmon.
Beat Wendigomon
Agumon reached Ultimate level.
Beat Monzaemon.
Beat Garurumon.
Beat Cyclonemon.
Beat Arukenimon.
Beat Fangmon.
Evolved a Free Monster.
Beat Dokugumon.
Agumon reached Champion level.
Acquired your first item while exploring.
Recruited a Free Monster.
Agumon reached Rookie level.
Embarked on your adventure.
Unlocked all achievements.
Saved Miyuki.
Beat Boltboutamon.
Beat the Master.
Completed the Moral route.
Completed the Harmonious route.
Evolved to Omegamon.
Encountered all monsters.