I have a character who wears a high-tech helmet with a high-powered laser mounted on it. Basically, the wearer “stares” at a stationary victim, and the laser is activated. The laser would take a short time (ideally a couple of seconds) to impart enough energy to cause the victim to explode.
A few obvious issues- the helmet would need to be massive and unwieldy, it would require an absurd amount of power (which would preferably be carried by the wearer), and the user is effectively staring directly at the beam’s reflection. (I’m planning to address the final point somewhat by making the wearer already blind.)
The wearer only needs enough juice to fire once or twice, but I’d suspect even that would require an extreme amount of energy. The wearer is willing to dump huge amounts of resources into building this helmet, but physical limits are physical limits.
Best case scenario, the helmet wouldn’t be much bigger than a motorcycle helmet, and the entire system (power and laser) would weigh less than 100 kg. This seems a bit optimistic, though.
This question may be too technical, but is it possible to make this work with semi-futuristic technology without making the wearer look like MODOK?