Here is the full list of all 19 Symphony of War: The Nephilim Saga achievements.
Complete the main story on Warlord difficulty.
Defeat all enemies in Chapter 12.
Complete the main story on Captain difficulty.
Surrender all the Imperial Squads in Chapter 27.
Unlock all Techs in a single playthrough.
Reach Max Faction Rank.
Army size reaches 150 Units.
Have 9 Units in one Squad.
Form a Bond relationship.
Class change to Tier 2.
Class change to Tier 3.
Rescue all 4 children in Chapter 15.
Reach Faction Rank 9.
Defeat Beatrix in Chapter 11.
Surrender 200 enemy Units in a single playthrough.
Use a Proof of Merit on a Unit.
Hire a Unique Mercenary.
Find or purchase an Artifact of Legendary rarity.
Reach Faction Rank 4.