Copy for my personal use:

Ripdolon (Definitely not OP crit [Redeemer])
Rubico is so old fashioned... Here is my Redeemer build for eidolon Hunt.

Basically, it's a heavy attack oriented build. You look at their synovias, you shoot, BOOM! Next.

Once big boi is down calling for little bros vomvalyst, you start stacking your combo counter up to x12 (it grows quite fast with Redeemer), and when he's vulnerable... BOOM! Next.

This build can also be used to tear down some high level enemies as it deals a ton of damages. I personally use it on liches, sortie bosses, long duration runs... With a pretty satisfying result.

If you manage to get your hands on a riven, you can remove Gladiator Might, and aim for a crit chance, initial combo, and either crit damage or damages as a 3rd stat, and, if possible, a negative that doesn't harm much.

Post Helminth update: Redeemer is back! Check out my ripdolon [Zephyr] build for a counter measure to the fall off nerf that went live during Scarlet Spear.