Here is the full list of all 16 Wanderjahr achievements.
Rescue member from ramen restaurant.
Have more than 0xFFFF gold.
Perform Counter Break at correct timing.
Obtain Scarab Artifact.
Rescue member from pyramid.
Obtain Artifact Slot from airship.
Dealt more than 0x270F * 0xA damage in 1 hit.
Obtain the last Artifact Slot.
Eliminate the master hidden in dungeon.
Restore all teleportation signals.
Combine Artifact correctly.
Learn all RS.
Beat the game.
Obtain all Artifacts.
Max out level all characters.
Earn crown star for all missions.