Complex sentence: Connor obtains the artifact and discovers that it was in fact a map to predict anomalies, however, they are not able to get it to work, but manages to create a device to lock anomalies and prevent creatures coming through.
Split into simpler sentences: Connor obtains the artifact and discovers that it was in fact a map to predict anomalies. However, they are not able to get it to work, but they do manage to create a device to lock anomalies and prevent creatures coming through.