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