Warfarme: Qorvex

Getting this radiation stone themed frame will require jumping more than a few hurdles including completing the quests Heart of Deimos, the New War and Whispers in the Walls which nets you the main blueprint and access to Sanctum Anatomica. There you can collect the rest either by getting lucky from the local bounties or by using Cavia standing (which you get by doing those bounties) to buy them from the bird shop.

Qorvex is built pretty solidly too, and while his speed takes a hit because of that getting the +3 punch through for any weapons he wields is great. Powers wise though, his status shield ability which protects both him and his nearby team is probably best as his summoned pillars or crushing walls are very situational and his ultimate radiation beam feels like a rehash of ultimate beams from other frames (it's weaker than Wisp's but better than Caliban's). He's an OK frame but by the time you get him you'll have found and are probably using something better.