While in sunlight, Dhampirs have disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.

You've gain the aid of your immortal vampiric family. You are resistant to necrotic damage and instead heal the amount of damage taken halved. However, you take double the damage when hit with radiant damage.

Thanks to your Vampiric heritage, you have superior vision in dark and dim Conditions. You can see in dim light within 60 feet of you as if it were bright light, and in Darkness as if it were dim light. You can't discern color in Darkness, only Shades of Gray.

You can drain blood and life energy from a willing creature, or one that is grappled by you, incapacitated, or restrained. Make a melee attack against the target. If you hit, you deal 1 piercing damage and 1d6 necrotic damage. The target’s hit point maximum is reduced by an amount equal to the necrotic damage taken, and you regain hit points equal to that amount. The reduction lasts until the target finishes a long rest. When bit, and the target's hit points are reduced down to 0 or lower, they must struggle to survive but with a price. If the humanoid succeeds all its death saving throws, the humanoid is instead unconscious and stabilized, magic or a medical kit can also stabilize the humanoid without any penalties. However, if the humanoid fails its death saving throws, it instead turns into a Vampiric Servant. The Vampiric Servant works as a companion, working and serving only for you, the servant wilts into dust if they die or refuse what their master has commanded them to do. The vampiric servant gains the following benefits:

Vampiric Servant
• It's hit points is 10 + your level + your Constitution modifier

• It's AC is 10 + your Constitution modifier

• It's Strength is 13, Dexterity is 15, Constitution is 14, Intelligence is 8, Wisdom is 10, and Charisma is 12. 

• It is immune to necrotic damage and instead heals the amount of damage done halved, and radiant damage is doubled.

• Darkvision. Your vampiric servant has superior vision in dark and dim Conditions. It can see in dim light within 60 feet of you as if it were bright light, and in Darkness as if it were dim light.

• Claws. Melee Weapon Attack: +(your ability modifier +2) to hit, reach 5ft., one creature. Hit (1d4 + your level) slashing damage.