this "species" is designed to be used as an addition to any other species
for example, you could add the Full Vampire species to a Human to get a +1 to all stats and the Full Vampire bonuses.

Vampiric Sense. Just by looking at a creature you can immediately tell if they are of your kind, you automatically know if a creature you are looking at is a Lesser Vampire, Full Vampire, or Ascendent Vampire. 

Superior Darkvision. Your darkvision has a range of 120 feet, instead of 60.

Sunlight Hypersensitivity. You have disadvantage on attack rolls and Wisdom (Perception) checks that rely on sight when you, the target of the attack, or whatever you are trying to perceive is in direct sunlight. In addition, being in sunlight causes you to take 1d6 damage per turn spent in sunlight.
Example: if you spend 4 turns in the sun it would look like this: 
turn 1: 1d6
turn 2: 2d6
turn 3: 3d6
turn 4: 4d6
total: 10d6

Spider Climb. You have a climbing speed equal to your walking speed. In addition, at 3rd level, you can move up, down, and across vertical surfaces and upside down along ceilings, while leaving your hands free.

Bite. As an action you may perform a melee weapon attack using your teeth, if you have the extra attack feature you may use a Bite after a weapon attack or after a Bite attack. The Bite attack uses DEX or STR as it's modifier to both damage and attack roles, and you are proficient with the Bite attack. The Bite's damage is:

1d8 X Proficiency bonus + DEX/STR. (D8's equal to proficiency bonus + DEX or STR)

After successfully landing a bite attack you may use THE SUCK as a bonus action.

THE SUCK. After a successful Bite attack you may suck your target's blood, THE SUCK deals damage equal to your level and heals you for the same amount, the target must roll a constitution saving throw (DC= 12 + Level/2), and if they fail then they gain 1 exhaustion point. You can use THE SUCK a number of times equal to your proficiency bonus, and you regain expended uses on a short or long rest. using THE SUCK gives you a Bloodlust point after being used.

Bloodlust. This feature only activates once 2d10 Bloodlust points are acquired, the amount required is rolled after each reset of Bloodlust points, IE: activating Bloodlust or losing all points, if you wish you may reroll the 2d10 and must use the new result, you can only lose Bloodlust points if you do all of the following: 
1: spend 1 week without killing any creature.
2: spend 1 week without using a single Bite attack.
3: spend 1 week without using any vampiric powers. (such as walking on walls, or using a vampiric power from a different level of vampire, like ascendent vampire for example)

Once you gain all required Bloodlust points, you enter a Bloodlust, a Bloodlust lasts for an amount of rounds equal to the amount of Bloodlust points required to activate it, with a cap equal to your level. During a bloodlust, you gain the following:

1: On each of your turns, you must spend all of your available actions on Bite attacks, you may choose who to Bite if more than one option is available, although you may not choose how to get to them, it must be the shortest available path even if it results in harm, (such as walking through a fire or into sunlight) if there are no targets in range, you take damage equal to the amount of Bloodlust turns remaining.

2: THE SUCK no longer has a use limit, and must be used after a bite attack.

3: You gain an Extra Attack.

4: You gain 20 feet of extra movement speed in all types that you already have. (EX: if you have 30 feet of fly speed it becomes 50 feet, but you do not gain 20 feet of burrow speed)

5: You gain advantage on all DEX, STR, and CON saves, but gain Disadvantage on INT, WIS, and CHA saves.

6: You lose 1/4 of your AC. (ALT VERSION: You lose all of the AC from your DEX modifier)

7: You cannot cast spells, or maintain spell concentration.

8: You lose the ability to speak or communicate in any way.