The Elder Scrolls V: Skyrim Special Edition

Unbound is Skyrim's tutorial quest. After the opening scene and character creation you merely have to follow the games prompts through Helgen and the underlying caves. The achievement will unlock upon exiting the cave into Skyrim proper.

You're guaranteed to get this just playing through the game at your own pace. However, the earliest opportunity is upon arriving in Whiterun following the following points.

Watch the opening scene, escape Helgen and follow Ralof or Hadvar to Riverwood. In Riverwood speak to Lucan Valerius and receive The Golden Claw quest. Follow the quest markers through Bleak Falls Barrow, making sure to collect the Dragonstone from the boss chest by the Word Wall. Then take this to Whiterun and speak to Jarl Balgruuf the Greater. Balgruuf will send you to see his court wizard Farengar who will then ask you to retrieve the Dragonstone which you can immediately hand over. When speaking to Balgruuf after this to claim your reward you will be interrupted by news of a dragon attack just outside of town. Balgruuf then sends you to kill the dragon.

Follow the guards out of Whiterun to the watchtower and kill the dragon. Shortly after its body has disintegrated you will absorb it's soul and unlock the achievement.

Copy-paste from my other guide for Skyrim : https://steamhunters.com/stats/72850/guides/1

How to be a Vampire or a Werewolf

Before we start, it's possible to becoming a Werewolf if you were a Vampire and the other way around. But you won't be able to becoming a Werewolf again, because Aela the Huntress won't do it twice.
It's advised to make a save before choosing.

Vampire

By characters : Harkon and Serana

• If you follow the main quest from DLC Dawnguard, you can be bitten by Harkon or Serena after you rescue her and take her back to Castle Volkihar.

By disease : Sanguinare Vampiris

• If you already are a werewolf, or an Argonian or a Bosmeri, you can't contract this infection because of immunity to diseases.
• You have 10% chances to contract it by being victim of Vampiric Drain Spell or weapons using by vampires.
• Or you can go to Redwater Den to drink from the Redwater spring to contract it easily.

By console commands

• DLC only : player.addspell xx0037E9

Werewolf

By the Companions questline

• Just do the Companions quests in Whiterun and you will be one of them during the quest The Silver Hand

Talk to Aela the Huntress

• If you are a vampire, you can ask her to make you a werewolf again

Perks

First of all, I advise you to lower the difficulty so you can kill quickly and easily

Vampire

• You can transform multiples times per day, whenever you want, but be careful with the sun !
• You can only gain perk by a power attack bite (Melee Mode, on the ground, but with a % and on humanoid with low health) or a Drain Life spell (Blood Magic mode, flying, left hand)
• Each new perk requires a total of 156 feeding to complete the entire tree
• Take in priority Unearthly Will (Blood Magic cost 33% less)
• Take the Night Cloak perk last because bats will steal your kill
• Leave your follower during your farm

Werewolf

• You can only tranform one time per day
• If you finish the quest Ill Met by Moonlight, and don't kill Sinding (the Werewolf), you will obtain the Ring of Hircine (Daedric artifact) that grants unlimited werewolf transformations, so go for it !
• You can only gain perk by consuming the heart of a corpse as a Werewolf.
• Each new perk requires a total of 164 feeding to complete the entire tree
• Take in priority Savage Feeding (you can eat from dead creatures)
• Leave your follower during your farm
• When you go back to normal, all of your equipement has been removed so don't forget to put it back when you are done

Place to farm :

• if you make a save before, you can go on a rampage in every cities.
• if you don't want, you can quick travel to an imperial or stromcloak camp, bandit camp (Helgen ...), caves (Tolvadld's Cave ...)
• for Werewolf : you don't have to kill while in Werewolf form, you just need to feed from corpses. So if you are more comfortable with your own equipement, kill all living things and then transform to eat.

This can be unlocked immeadiatly after escaping Helgen. After exiting the cave follow either Ralof or Hadvar along the road to Riverwood and they will point out several landmarks to you including The Guardian Stones. Activating one will give you the associated blessing and unlock the achievement.

The Standing Stones achievement can be unlocked at the same time as it only requires visiting thirteen standing stones not thirteen unique standing stones.