Your Dexterity Score increases by 3 and your Charisma decreases by 1.

Arachnae grows much quicker than humans. By the time a human child grows to 2 years old, an Arachnus child has gone through the developments of a human 10-year-old. However, Arachnae have shorter lifespans than humans, usually living up to 60-70 years.

The Arachnus's eyes are trained for the dark. They can see in the darkness as if it were light until 60 ft., and dim light up to 120 ft. They can not distinguish colors in the dark.

The 8 spider-like eyes, and sharp ears of an Arachnus give them keen senses. They have proficiency on Perception checks

In times of great need, the Arachnus can channel their primal spirit and summon from their energy 4 long spider legs from their back. These spider legs can help them climb 20 ft. a turn or they can be used in combat. As a bonus action, you can make two melee attacks with your spider legs that does 1d4 Piercing damage (you're proficient).