Bloodplast is a very useful substance. You know how in some first-person shooter video games you can heal your wounds just by waiting a bit? Bloodplast attempts to recreate this, sort of. When a puncture wound is sustained on a suit of armor equipped with bloodplast, the stuff will expand to fill the gap and harden upon exposure to the air. It also helps soften blows. This is by no means a substitute for armor repairs, but it's the best we can manage. Bloodplast is also easier to destroy than the standard plates, due to its nature.
Keep in mind that you have a limited supply of bloodplast. To refill, inject a bloodplast syringe (the contents should be an opaque white) into the marked spot on the side of the plate over your heart. (Assuming that it's on the left.) There should be a small aperture that will open when the syringe is inserted. Once the bloodplast has been injected into the suit, wait a second and then hit the area with a fist. After the first whack, the bloodplast will begin circulating. NOTE: DO NOT ATTEMPT TO INJECT BLOODPLAST INTO ONE'S OWN CIRCULATORY SYSTEM. DOING SO WILL RESULT IN DEATH.