So you think it's impossible to kill a dragon with your bare hands huh? To beat a giant to death or take down an armored behemoth with your own two hands just because there's no skill tree.
Well guess what, you never will. You're a quitter and quitters have no place amongst the honorable ranks of the unarmed elite.
You need only four things to be an effective hand to hand duelist:
Kahjiit: Start off with a passive +15 to unarmed attacks, this is what makes the unarmed warrior the most powerful threat early game.
Heavy Armor: I take the full tree since you are going to be right up in the enemy's face at all times, but you only need 30 points to get the Fist of Steel perk that will make any gauntlet's armor rating your attack damage.
Smithing: Armor is your weapon. Improve your fucking armor.
Enchantment: This is what will make you truly deadly. Once you get the power to enchat you will be able to add Unarmed bonuses to all your god damn armor and become a wrecking machine.
First you must make a new character, Kahjiit. This is not fucking negiotable unless you want to have horrendous early game damage output unless use weapons but then you're a fucking pussy. The first thing you'll need to do is kill an Imperial guard and take his armor, not the light shit the REAL FUCKING ARMOR. Equip it and start swinging, take a few hits when you can because you're gonna want to get those Heavy Armor levels in as soon as possibly. After completing the intro make a beeline for Whiterun. This is not required but it is the fastest way to do this shit so just fucking do it. Once there go immedaitely to the Hall of the Dead and accept the quest for finding the priest's pendant. Go into the catacombs and immediately one shot two skeletons because you're so fucking manly. Now let the other one hit you while you run around and heal yourself with the Healing spell. This is the most efficent way to level it to 30 early game because you won't have any random bull shit happening to you the skeleton doesn't hit hard enough to really cause any threat to you. You should then have enough experience from both Restoration and Heavy Armor at that point to buy the Fists of Steel perk and start plowing through fuckers.
Now that you are truly a god among men, do whatever the fuck you want to do in Whiterun and then immediately head for Riften. Do what you need to to get into town and find Brynjolf who will ask you to do some ill ass shit. Do it, fuck moral principles DO IT. He will give you a quest to find him in some shitty bar but fuck that that isn't why we are here. Follow the quest marker to the Ratwys where you'll immediately be attacked by some dudes. Kill them, all of them. Eventually you'll find a man named something the Fist. I don't remember his name, the important thing is he has a pair of iron gauntlets that give you +10 to unarmed attacks. RIP THOSE OFF HIS BLOODY CORPSE. Now get your Enchanting up and then burn those suckers so you can bind it onto every fucking single piece of armor you have. Think it just goes on gauntlets? Nope. Rings, Necklaces, fucking everything. Put it on fucking everything.
After that you're pretty much set, take whatever other perks and level whatever skills you think best suit your stlye of play. I personally perfer Alteration for the added armor and Restoration for the healing, but hell maybe you want to raise zombies or shoot lightning. Go ahead, just remember if you use weapons ever you are a fucking coward.
Now go punch a dragon square in its smug fucking face.