Crawler Zombie

Description
The  is a type of Zombie. It is considerably slower than the average zombie as it does not walk or run and instead drags itself along the ground. This may be used to player's advantages as it's speed is independent of the speed settings. On the other hand, it is also more difficult to detect, because it can attack you from below while you're repelling one zombie horde, with the added benefit of being harder to spot in a darker light ambience and ambient foliage.

Combat
The crawler zombie, while always slow, is still a threat not to be taken too lightly. Not only are they harder to reach, since they are almost flat on the ground, they also have a chance to injure (sprain or even break) the player's leg upon a successful attack. Their swinging animation might not be shown on time or be shown at all (as of Alpha 18), making dodging on time difficult. Therefore, the best way to fight them in close-combat is to crouch. That way the vertical distance is shortened and it is easier to stay outside of the crawler zombie's attack range, while still being able to strike back with a melee weapon of choice.