[quote name='irratebass']I haven't ran into a DEATHCLAW yet, I keep hearing horror stories about them and how tough they are, any tips?[/QUOTE]
Deathclaws are very fast, have a ton of health, and can kill you in just a couple of hits, depending on difficulty. They do a lunge attack, which quickly closes the gap between you. Unfortunately, they didn't include the dart gun in this game. In Fallout 3, the dart gun automatically crippled any targeted limb. So, all you would have to do is cripple one of its legs, and it became a lot easier. They still had a ton of health, but they could no longer do their lunge attack, so you could just keep backing up and firing away.
In this game, just avoid them until you're a higher level. If you see them, just don't go that way. If you happen to run into a pack of them that attack you, just reload and don't go that way until later.
My preferred method of dealing with just one or two DCs is the super sledge (or its unique variant, Oh Baby). If you run into a pack in a dungeon area, like at Dead Wind Cavern, you can go with the Super Sledge there, as well, but make sure you take some drugs first. Just try to fight them in a tight space, so that they cannot surround you.
Out in the wastelands, a scoped weapon is your friend. If you see DCs, take them out from a distance. If Boone is with you, that makes the task a lot easier. The first scoped weapon I used a lot was the Gobi Campaign scout rifle. It can be found in the Sniper's Nest, a little ways away from the Cottonwood Cove. It's in a very hard locked case, though. Later in the game, you will come across anti-material rifles.