Human Soul Keeper

When you get the Blood Doll Collector achievement by getting the first bite, gaining the soul, and gaining a new human as a minion, you get +1 on this achievement for as long as you keep that soul. If you move or trade the soul, you lose the point for that soull, but can regain it if you get the soul back. (Counts for new achievements after 2/4/16)

Level 1:
10
Level 2:
25
Level 3:
50
Level 4:
100
Level 5:
250