The Last Faith

You level up with Lady Helenya sitting outside the Oxnevylle Manor. You use Nycrux to level and it gets more expensive. Just level up 1 stat to 50 and you will get this achievement. Once you hit level 50 with a stat it kind of plateaus, meaning each incrase after really isn't worth it. For example, instead of getting 2-3 HP for leveling up Vitality around level 35-40, if you level it after 50 you only go up 1 HP at a time maybe 2 occasionally.