I have studied what the character does using various weapons in various situations and the hit box is too low. The target area is at the character's waist when it should be higher. This is why when you shoot an arrow up at an enemy over you have to aim 3 times as high. Another problem is when using the spear. It can't hit an enemy standing behind a half wall because it's hit box is too low only hitting the top of wall. This also explains why you also miss enemies when they are standing on higher ground when you should be hitting them in the legs, yet they can easily hit you.

This basic mechanic needs to be fixed ASAP. Raise the hit box, so that it matches the area of the character's chest when it comes to using melee weapons and aim from the shoulder when using the bow.