Talk:Mastery Rank/@comment-50.55.36.102-20130925224110

Finished the mission to get rank 7 -- kill 1 wave each of Grineer, Corpus, and Infested, each with a time limit -- I used Strun Wraith, after blowing it with a leveling weapon, and then a tatered (but not yet 30) Braton. Ospreys count as Corpus, btw.

And I picked up three control modules.