This is the 2nd Helminth Revenant build.
Build A: https://overframe.gg/build/113532/
Build C: https://overframe.gg/build/113534/
This build is focused around Breach Surge and Dance Macabre for some REALLY nasty damage.
It should also be noted that it's important to keep Mesmer Skin up as it makes [Revenant] invincible.
So all you need to do get into a nice area, Breach Surge the enemies, activate Dance Macabre, and hold down whatever your shoot button is. Holding shoot is important because it increases damage output.
This build is probably better than [Mesa] at clearing out low level missions, and is much more entertaining to watch and satisfying to play.