Tethra's Doom event question

[ΣПDΣЯ]

How do I know if I've completed this event? So It counts as "done/finished/completed"?

I've done the main mission where you get your Tethra Data Fragments a few times and I've done the missions:

(Stage One) Tethra's Doom - Hijack Fomorian Power Cores
(Stage Two) Tethra's Doom - Hijack Fomorian Shield Cores

Is this event completed for me now?

[Deadjack]

Thanks for your answer. Well i gess i won't make it (i don't have thoses 2 warframes).
This event is for the others. Good luck and have fun.

[BuenG¿la]

Everything you need to know.... for the first tethra mission

http://www.youtube.com/watch?v=DjI4de-ownY&list=PLutWbijS5od9IP5qAQMVUQ2xiLXENiuXU&index=21

[Zero Honour]

Are you trying to solo it Deadjack? In a halfway decent group you should be able to do it easily in any frame, although your Mag would be useful for shield polarise.