You're not a chosen one who can kill everything and solve every problem with violence. You're just a man.
Y'know, the biggest fallacy with this fancy logic of yours that it only works when related to combat characters and situations. As long as we're talking about noncombat solution, you ARE a fucking chosen one who can solve pretty much everything with a perfect solution and best outcome for himself and, occasionally, even society (after all, it's me, the player, and not you, the designer, should decide whom my character should aspire to become. even if I wanna play as a complete retard who still wants to bring some good and hope into an otherwise rotten choice, it is still my decision, even if it is a dumb on e). Like, as far as I get it, best outcome for teron lies in uniting Antidas with Carrinos and, as far as I've seen it, it's not quite possible without investing heavily in social skills.
But I digress. While you like to state that you lose your first combats and should not engage in them because your character is a chump (which is pretty lame excuse but ok), suddenly, as long as you're choosing to play as a noncombat character, you start as a fucking ace of your trade. No, really, if you build your char right, it seems like it is perfectly possible to infiltrate palace dalaran right from the start, from the very beginning and without doing any quests at all (now, you can easily get to the Antidas himself, just checked it right now, but the question stands as for whether you're able to steal the scroll from his display room - I'm too lazy to calculate the proper build, but I guess it is possible). So yeah, if you want to start as an expert infiltrator and thief (and please, don't tell me that it is realistic that any chump can get into a highly secure palace completely unnoticed) or if you want to start as an expert actor (because getting there via disguise is probably even easier) or if you want to start as a prince charming (cha 10 and persuasion is the easiest way ever), it is all piss-easy, but if you want to start as an expert in combat... No, fuck you, in combat you can be only chump. That's a sound logic.
Edit: Sigh, I managed to finish the bandit's camp, but at what cost! I had to pay for the prisoner. What kind of assassin am I? Shame on me. On the bright side, I will continue the game. :D
Your build is crappy, probably. My 10 10 4 8 4 4 dodge-dagger assassin with hardened masterwork iron manica & steel jambia was able to finish off that camp with relative ease. You crit off the leader, then with 6 fast attacks you pretty much one-round the raider that is closest to you, then you defend from the remaining two meleers in the spot between prisoner's cage and wall, then, finally, you kite away two archers, kill them, and then off the third one. Quite doable.
Couldn't finish off the mine, though. Best I was able to accomplish is to remain mano a mano with their leader, but even netted, he's just too much for my dps. Perhaps if you forgo pumping other skills and get 75 crafting instead, with balanced hardened jambia it would get doable... But that would require a totally different build, like, less STR and perception to get int 10 and that shitton of points, so maybe that's a bad idea.