Me with max upgrades vs Sundowner I have revengeance difficulty on, and this was my first attempt and I'm way too lazy to do no damage. But damn, he died in like hits.
Lesson learned: the easiest way to defeat Sundowner is using his own weapon in Ripper Mode. Also, can you please do the same thing but without breaking Sundowner's shields?
Wow, I just accidentally beat Sundowner too fast by enabling Ripper mode and doing a heavy attack with fully upgraded pincers. This feels so cheezy though