Talk:Mastery Rank/@comment-98.198.73.125-20131021022537/@comment-80.99.66.57-20131105225841

grineer survivals give the best xp since the napalms/bombards/heavy gunners give much more affinity than infested ancients / corpus techs and they are really common. Try nouvo on ceres (starts already at high lvl so need a good team), apollodorus / cassini if you are not that geared.