I thought OP wanted to be a family man. :c
On a more serious note, back when we got old gh, I read somewhere that each mob you kill in the second part has a fixed chance to spawn the miniboss. If you're having trouble with khalis, kill everything else, backslide away from them/cloak exceed past them.
Watch out for the minibosses, there's 5 (or maybe 4, I'm not sure, I do old gh on autopilot nowadays, brain is not focused during it lol) fixed spots where they spawn, be careful where you engage, some of the spots spawn additional mobs.
For amdarais, with fireproof pot (bathory armor) I take 16~20k damage so as long as you keep your HP over 21k, you should be safe. Watch out for double magnums, that's the only thing that hurts. You have 5 seconds to outpot the ~20k damage if RNG decided it's double magnum time. I can't really remember the last time I got hit by hell's judgement so can't comment on that damage... =/
EDIT:
Oh yeah, the sneaky 9k crits too, watch out for those, that could be 30k burst damage (crit+magnum).
Edited by OniichanN, 17 May 2016 - 04:02 AM.