Valkyr is peak health armor tank tbdesu, i get to around level 4000 enemies before i have to start relying on her passive to stay alive. Her damage is ridiculous too because she scales her base exalted dmg off ability strength. I'm doing 400+ mil heavy attacks and 10-30 mil perma red crit light spam constantly... just a ridiculous frame. I was doing much the same build with Nova and a Hirudo Coda but this is so much better, similar paper ehp levels to my nova but with status immunity, more mobility, way more damage, more attack speed, and the ability to push level cap with passive...