So, I think I'll create a topic which will create less flame upon myself than my last one, and talk about actual gameplay.
Here's what my tactic was in the quarry. I had Lily and ED-E with me, and I'm not in hardcoe mode, so they won't die. I was at 100 in Energy Weapons and Guns. I would sneak from far away, and fire my Marksman Carbine with Armor piercing rounds, so as to attract one Deathclaw at a time. This worked for a while. I would shoot it as it ran down the ledge, Lilly would intercept and do what she could, then it would kill ED-E, and by this time I have my special Plasma Rifle (forget the name) and I'm unloading on the bastard. (And plasma, apparently, is no good against the super skin they have, either.)
Then I snuck deeper into the quarry. I saw the Alpha Male, so I did the sneaking lure trick. Suddenly every Deathclaw in the area comes down upon me at once, killing Lily within a single swing of her sword and ED-E got swatted down like a fly. And here I am with an army of the two alphas and two or three more Deathclaws besides hitting me over and over at high speeds, killing me almost instantly.
I even went back to Very Easy just to get trough this, to no avail. I used Med-X, Psycho, you name it. What am I doing wrong? Is there a trick? Or are the Deathclaws just plain broken now? And why can't armor piercing rounds beat the damage treshold of bare skin? Bullets go through alligators like butter, so I don't think Deathclaws should have super skin. Or if they should, how can they move like cheetahs on Jet!?
I'm a bit confused. Are you angry because they're too tough, or because they're too tough and too close to the start of the game?
IMO, they put the DCs in the quarry SPECIFICALLY to force you to go the long way around. But the fact that you have Lily and ED-E while using the Marksman Carbine with AP bullets, makes me think you've at least gone around the area and progressed far into the game that these guys shouldn't be
that much of a problem. If you are indeed, a decent way into the game, then it's all about tactics. If not, then I suggest you give the quarry and other DC infested areas a wide berth until you've got the skills and tech to take on packs of these monsters.
There are many ways to kill these guys, but for me, it's been sniping them with either the Gobi or the Silenced Sniper rifle with AP .308 rounds from a ways off. In the quarry, I pick off the guys by the entrance to the quarry, and then slowly move to a higher position from which I can snipe the deathclaws. Then I engage them one at a time, starting with the alpha. With the sniper rifle, I can get plenty of shots in and out of VATS. It's been a LOOOOONG time since a Deathclaw has killed me, TBH.