Here is the full list of all 11 そこへ向かう(GO THERE) achievements.
I tamed dragon at first time.
I passed valley.
I passed forest.
I passed rocky place.
I passed snow field.
I reached there.
I overcame trial of lightning.
I overcame trial of spore.
I overcame trial of rock.
I overcame trial of icicle.
I overcame trial of dragon.