Image: Rebel Wolves / Bandai NamcoOfficial screenshot from Rebel Wolves / Bandai Namco.
Arch Warlock is earned by buying an Ultimate Perk in the Witchcraft tree. It is one of the rarest progression achievements, because it takes a big investment of perk points in one tree.
Spend 35 perk points in the Witchcraft tree to open its Ultimate Perk tier, then spend 4 more on an Ultimate Perk. The trophy pops when you buy it.
Master of Arms and Creature of the Night work the same way in the other trees. Make a manual save before you spend, buy the Ultimate, then reload and spend the same points on the next tree.
Image: Rebel Wolves / Bandai NamcoAbsolutely Insatiable
Have 3 Passive Abilities equipped at once.
Image: Rebel Wolves / Bandai NamcoBalanced Diet
Drink from 10 animals, humans or monsters.
Image: Rebel Wolves / Bandai NamcoCreature of the Night
Unlock an Ultimate Perk in the Vampirism tree.
Image: Rebel Wolves / Bandai NamcoDead Man Talkin'
Talk to a dead person with the Compel Soul spell.