Running, brandishing a melee weapon. Due to its fast movement, it is difficult to avoid the attack when in close proximity.[excerpt 1] If the user's arm is also mutated into ruka-srp his attacks will have greater distance and can hit characters that is lying on ground.
Randomly shoots when armed with a gun. Because the attack frequency increases, approach is difficult.[excerpt 2]
The head of the Glava-Begunac is vulnerable, however the most useful way to kill this mutation is to counterattack it.
Its also a good idea to shoot its torso or legs, as shooting the arms WILL have a good chance of mutating it.