There are several kinks to work out, most of which were caused by a lack of specification:
You have not set what kind of blood this creature has, be it hemoglobin (red), hemocyanin (blue), chlorocluorin (green-dilute, red-concentrated), hemerythrin (pink), or hemovanadin (yellow).
Hemoglobins, All blood cells will have flagellates, and Attempt to unblock themselves in the event of a blood clot inside the veins.
You have also not given it any type of skin, so it is extremely vulnerable to infection.
2 Layers of Humanlike Skin and an ultra thin layer of cartilage in between them. Plates of slightly thicker cartilage will also be in that layer, connected to muscle fibers. so if the creature has a wound inflicted on it, the muscles will instinctively contract, moving a plate in place to help slow the blood flow.
It has no mandible or teeth due to unspecified mouth design, just a tube connecting to its stomach.
Tombstone shaped teeth with a curve like a shovel, and an upper and lower jaw, about as long as it's head Designed to shave off layers of it's food before chewing, like Whittling with a knife.
Its brain-tendrils are vulnerable to harm.
A Solid bone shell like that of a Snail will allow for them to retract and extend in and out of it. They will be Shaped so that the two holes of the shells can plug together without a seam.
It has no sense of smell, taste, hearing, or sight due to the lack of or nonfunctionality of relevant organs.
Each head get's a tongue, Right head has hearing by way of Ear holes below it's eyes, and the left has smell by way of Nostrils in the same place. These Holes will have a flap of skin and cartilage that can be closed and opened. and their underside will be covered in hair, so even when opened air and sound is filtered/Muffled to protect from damage and infection
It has poor traction and no ability to grasp.
10 Strong bone spikes cover each foot, and each arm will have 10 curved spikes of varying size and length to allow for grasping and fine movement. Along with 2 spines with a blunt and round end
It has no rib cage or any other design of organ protection and thus its torso is vulnerable, although it would need a diaphragm to let it breath if it got one of these cases..
4 Layers of skin with Cartilage webbing serve as the ribcage, along with muscles to inflate and deflate the lungs.
It has no means to absorb nutrients from food.
It's stomachs will be filled with a fairly strong acid, and layered with a material to protect from it.
The size of the creature is unspecified.
Smaller than humans, larger than dogs, lets say 4 feet tall.
Waste will Come primarily from a clocoa, and sweat from the skin.
Each eye will absorb a particular color, Red blue and green respectively, all of them will be able to detect ultraviolet light however. The three eyes will allow for triangulated depth perception hopefully.
Eyes will come in two main colors, White with a black center, and grey.