The Enforcer is a dinosaur-like bipedal monster with a nose ring. It is armed with the Enforcer Gun, which fires homing mini rockets at the player. The Enforcer also deals strong melee attacks. It is a slow moving foe, unlike its agile counter-part from Duke Nukem 3D, but it is a lot tougher.
Besides the regular Enforcers, there are ones that are equipped with a large metal shield. The shield must be destroyed before damage can be dealt to the Enforcer.
One Enforcer acts as a boss in the level "The Shrunk Machine", since Duke has to fight it while shrunk, and it has a boss meter just like all the other bosses. Other than the increased amount of times you need to shoot it (since your weapons are also smaller and inflict much less damage), it can lethally stomp Duke. It acts the same as regular Enforcers.
Enforcers are slow, and have a large amount of hitpoints. Despite its toughness, conventional weapons work well because the slow speed of the Enforcer makes it easy to concentrate large amounts of firepower on it. If multiple Enforcers are being fought at the same time, grabbing the Enforcer Gun ammo from a previously killed Enforcer can allow you to kill the next one, and repeat the process.
The Shrink Ray can easily deal with an Enforcer, but this also means that they will not drop their gun/ammo. If you already have an Enforcer Gun, and there is an EDF ammo crate somewhere nearby, then this can still be an acceptable situation because you will not need the drop from the Enforcer.
Where heavy objects are available to pick up and throw, thrown objects can be an effective way to deal damage if ammo is a problem (especially the rooftop battle), as bricks will one-shot Pig Cops and deal heavy damage to Enforcers.
It is recommended to find a large piece of solid cover while an Enforcer is firing upon the player, as their homing missiles deal heavy damage and can be difficult to avoid.