Here is the full list of all 38 House of the Dying Sun achievements.
Survive for at least 5 battles in Challenge Mode.
Complete at least 1 battle in Challenge Mode
Complete a mission on Harbinger.
So I could rest.
To avenge the Emperor.
Complete a mission on Warlord or higher.
Earn a second wingman.
Purchase an upgrade.
Complete a bonus objective.
Earn a new weapon.
Add a destroyer to your fleet.
Destroy a vessel while inside its shields.
Destroy an escape pod.
Earn a wingman.
Complete a mission on Invader or higher.
Complete host uplink training.
Earn a frigate for your fleet.
Purchase all upgrades.
Run over a traitor lord's escape pod.
To free the galaxy.
Because I love to kill.
Because this isn't real.
Because I am not human.
Survive for at least 10 battles in Challenge Mode.
Assassinate Commodore Freyv.
Assassinate Commodore Ausgauth.
Assassinate Commodore Elduette.
Assassinate Lord Commodore Seigfast.
Assassinate Lord Commodore Ganuun.
Assassinate Lord Commodore Naybard.
Assassinate Traitor Admiral Anrune.
Assassinate Traitor Admiral Bergautur.
Assassinate Traitor Admiral Alfmundur.
Assassinate Prince Aum.
Assassinate Princess Admiral Du Moch.
Assassinate Kingsclone A1.
Assassinate Kingsclone B1.
Assassinate The Traitor King.