Quarto: not necessarily. How do you think earlier armor-piercing warheads were made? The tip of the dart is solid, but the core might be very powerful explosives that would result in flying fragments. The reason we dont use them anymore is because we came up with shaped charges. It effectively shoots a bolt of molten metal through armor at insane velocities (sort of a pneumatic effect). Would be great against plasticine materials or metals. I doubt it would work that well against crystalline armor, however, seeing as the top layers of crystals would slag off and absorb the blast, leaving the rest untouched. Also, organic materials are decent conductors as long as they have free ions in them (such as the dissolved salt in our bodies). This is what makes us (our nerves specifically) so vulnerable to shock. It's a crystalline material (silicates perhaps) that would prevent such a blast from being effective if it relied on through-material conduction. However, if it was just a brute-force blast it would take a barrier of lead or some similar shielding to protect your systems.
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You deal death with your roars and your screams, your threats, your taunts, your overblown ego. I hand it out, one with the steel and the silence, the blackness around me, with a thought.