Berserker spam?

I just came across a Berserker in breach who basically won the match by himself with the ram at full health and their respawns at maybe 29 at phase 3. I didn’t win a single fight against him because he would spam an infinite combo of those fancy feint moves. Is there a counter to this? I’ve never run into this problem before and haven’t seen anyone complaining, so I figure there’s gotta be something I’m missing. (I already tried JuST dODgiNg)