For this specific titel you have to set 10 Skeleton-Ships on fire with an ashen- winds skull. After that you unlock the commendation with the matching title.
Thats the plan for the future. I focused myself on this "Solo content", because its eay to record. I have some longer videos where we do PVP and othe fun stuff, but i have to cut them first and prepare them for RU-vid. Stay tuned for that :)