Knife

Pros

 * Bladed weapons, which means that every attack they do has some chance to cause bleeding.
 * Lighter, quicker weapons, giving all knives some chance to counter an enemy’s attack.
 * All knives are one-handed weapons, which means there is no penalty to switch to them from other one-handed weapons.
 * Good critical chance.
 * AP cost for basic attack is on the lower side.

Cons

 * Knives do less damage than most other types of weapons.
 * Despite higher crit rate, critical hit multiplier is low.
 * Better models of knives are harder to find.
 * Knives do significantly less damage to zombies than humans.