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.
Beat Fanglongmon Ruin Mode.
Completed Truthful route to the next generation.
Syakomon reached Mega level.
Beat Zhuqiaomon.
Beat Ebonwumon.
Beat Azulongmon.
Floramon reached Mega level.
Falcomon reached Mega level.
Lopmon reached Mega level.
Dracmon reached Mega level.
Kunemon reached Mega level.
Beat Baihumon.
Beat MegaSeadramon.
Took the Truthful route.
Completed the Moral route.
Beat the Master.
Entered the final battle.
Saved Miyuki.
Evolved to Omegamon.
Labramon reached Mega level.
Garurumon reached Mega level.
Renamon reached Mega level.
Acquired 100 items while exploring.
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.
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.