Deathclaw adult? Around 5 or so, but hey, the laser rifle has 24 shoots per reload and no recoil, so spamming is the easiest thing you’ve ever did see. You obliterate everything in just a few shots. My usual build is a laser rifle crit build. I just feel it sets a bad tone for the game by throwing so much at you in the first fifteen minutes just because Bethesda wanted an incredibly exciting polished moment for E3. You're also told repeatedly that power armour is incredibly rare and high tech like the NCR can't even field power armour troops because they don't have the knowledge. Not to mention, in all other games you're warned extensively about deathclaws as the most dangerous beasts in the wasteland. There's a difference between knowing where you can find some OP equipment and making a beeline for it from the start and the game just dropping it into your hand. Radiation isn't an issue, anything short of a fat man is just a scratch and you can just jump off of anything. Not to mention, it's not even a case of just having good armour early on, you just become a tank. Because it's just so easy to get that fuel source and even when it breaks it's so easy to repair it.