I'm at the very end of the RHO cauldron and it is abundantly clear that I am under-geared and under-supplied. I am getting absolutely destroyed and don't stand a chance.
If I remember correctly, that's not all that challenging depending on how you approach it. Here's how I did so:
Take out the two Watchers first. Then climb one of the towers and confirm that there's a platform behind it. Override to release the Snapmaw and immediately jump to the platform before the tower lowers too far. The Snapmaw can't reach you here, so focus on breaking off the heavy artillary from the accompanying Ravager. Now you're unassailable and can either slowly pick away at both, or drop at a good moment to grab the heavy weapon and make short work of both of them.