Lance Zombies appear as Crimson Lance soldiers who have been zombified. Their armor gives them a higher health and better armor than most other zombies. They are capable of deploying a Scorpio Turret at any time.
Aiming for the thighs and crotch area tends to deal more damage than the rest of their bodies, as with normal lance soldiers, due to the fact the area is un-armoured. This is a good tactic if you are swarmed and achieving headshots proves too great a challenge, which is entirely possible as their hunched-over posture hides the silhouette of their head in front of their body, making target acquisition harder.