Thanks for the feedback! Yeah we realize the game requires pixel perfect mouse detection and apologize about the frustration that it creates; it's not there for the very obvious time constraints. As for the legs - there is actually a secret mechanism that's not disclosed - if you destroy legs, not only will that deal direct damage to the torso (like all other body parts), the enemy will also receive fall damage (albeit slow). But the balancing is pretty off so that the best strategy is likely just focusing on the torso majority of the time.