What I've learned about Felarx evolution challenge 3
I saw this challenge and immediately thought there must be some weird meaning or trick to it, since the default chamber for non-incarnon mode has 6 shots.
From what I remember, the angel won't move if you silence the weapon and use an invisible frame like Loki or Ivara, so you can just shoot its unmoving head until you complete the challenge.
Loki is really, really good at killing void angels. They simply have no way to deal with invisibility aside from AoE stuff, and Loki can bullet jump out of it right quick. That’s why he’s better than Ivara at it.
I’ve killed most of my void angels with the Ratka Cernos!