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