Jeg har kopieret min guide fra TA.
I found the fastest way to lvl up were:
Find a cave with some Draugr Deathlord (i found some in the Forsaken Cave) and get 2-3 to attack you at once. Just stand in a corner and let them hit you over and over again.
Make sure to wear heavy armor and bring a lot of magica potions because you will use alot for spamming healing spell.
It will skill Heavy armor and restoration pretty fast. Just go legendary on heavy armor when it reaches 100.
Adjust difficulty if you can't heal fast enough.
Its pretty boring but its worth getting this achievement
Its most likely the last one you need
Legendary Dragons are confirmed to start spawning at level 78.
I found my dragon at Lost Tongue Overlook, south-east of Riften