Archeoplasma Warhead

Plasma weapons are among the most destructive weapons known to Man. It is no wonder that they were found interesting and useful by the makers of archeotechs. What's more, their variant of it is many times better than ever the most advanced variants of plasma weapons known to Man.
The so called archeoplasma warheads are capable of instantly unleashing a lot of superheated plasma... that, however, unlike manmade versions aren't dispersed in every direction. Instead, it is more or less directed towards the 'front' of the missile, easily melting through even the strongest particle shielding and warship armours.
Unfortunately, as every archeotech, its supply is vastly limited. What's more, as in case of most rockets, the chances of it reaching the enemy are further limited, as while archeotech missiles are resilient to electronic countermeasures... the other components of antimissile defence works well.