Talk:Mastery Rank/@comment-97.126.15.63-20180719052723/@comment-34103815-20180809023944

OS (with a friend who acts as DPS) or Adaro, Sedna for Warframe leveling (stealth run).

Adaro, Hydron (also Sedna), and E/SO for weapons.

Bere on Sedna can be good but that needs a coordinated squad.