I've got a few ideas, maybe you'll like some of these. I'm just going to put on my http://www.loadedpants.com/wp-content/uploads/2010/03/achievement-unlocked.jpg (Yes, i own that. And yes, I am now wearing it).
Finish Him!Deliver your first finishing move.
FatalityExecute X amount of finishing moves.
PerkyGet all perks for your weapon of choice. (Basically, if you love swords and get all the sword perks, you unlock this.)
He had it comingMurder a Bosmer in cold blood.
Here there be DragonsGet killed by a Dragon
DragonslayerDoes this one even need to be explained? (Note, that is the actual text I want that achievement to have
)
Abandon all hope, ye who enter here!Complete a dungeon X levels higher than you. (Or something like that, the concept needs work but the foundation of the achievement works)
ObliviousRead a book telling the story of the Oblivion crisis.
Blah!Become a vampire. (Assuming this is possible)
A levitate scroll would've been niceClimb the 7000 steps to the throat of the world.