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