Knockdown Spam Is Not Fun

[RealPandemonium]

Then make a vid of you doing a mission while never touching a solid object for me.  I'll download the vid and then highlight every time you'd be susceptible to a shockwave, eh?

 

Their spawning may not be indicated ahead of time, but once you know their attacks you can dodge the projectiles with timing.

Typically knockdowns are preceded by an audio cue, so you can just roll or gtfo.  

 

I was referring to Seekers/Ballistas quietly spawning somewhere out of view and one-shotting you.  You can mitigate this by being evasive in general, though, and catching wind of them when they miss their first shots.