How to kill Burial Chambers boss this patch?

I'm a bit undergeared but completed all the rest of the atlas (except pillars that fails to drop lol). This boss has soul eater and just keeps regenerating. I do use frost bomb but this boss gets replenished by its minions. The map needs to be corrupted rare, of course and maybe I've been unlucky with mods. The first one had life as extra ES and the next attempts were not great either.

I've dealt with everything else in the atlas up to here and it feels like a hard stop.

Do people buy carries from expert single target boss killers or roll alts to kill this boss?

i have noticed that if you kill the pack of enemies in the boss room first before you engage her she's quite a bit easier.

seems soul eater has a proximity.