just a quick over view of weapon details,
small guns (no heavy weapons e.g spartan lazer rockets) that fire only 1 shot head shot attempts require 1/3 or more to suceed only
Head shots do instant kills shielded targets have their shields knocked out and take half total health damage.
weapons that fire more than 1 bullet do not instant kill instead do double damage (for the bullet that hits headsht only)
small guns (no heavy weapons e.g spartan lazer rockets) that fire only 1 shot head shot attempts require 1/3 or more to suceed only
Head shots do instant kills shielded targets have their shields knocked out and take half total health damage.
weapons that fire more than 1 bullet do not instant kill instead do double damage (for the bullet that hits headsht only)