Vampires are faster, stronger and more resilient than humans when their thirst is fulfilled. But the more their thirst grows, the weaker they become.
As a vampire, you burn when exposed to sunlight. It also prevents you from regenerating your health.
You suck the blood of the living to survive. You can also bottle it for later sipping.
Each creature has a blood type that defines the hunger it will bring you as well as bonus effects.
Vampires can transform into bats to move discreetly and freely in the sun.
In-game Vampire power descriptions.
Vampire Lords have wings to fly faster than in bat form, but they will not protect them from sunlight.
Vampire Lords can see creatures through walls within a 30 block radius.

Origins: Vampire brings 2 new origins : Vampire and Vampire Lord