The Cyclops can instantly crush him with a melee attack, or by jumping and landing on him. The secondary fire is effective too, by pushing the Hell Knight very far and leaving him with low health, ready to be finished by another Cannon shot or the allies on foot. The GEV Tank can instantly kill him if the player scores a direct hit with the Main Cannon shot. The Hell Knight can also do some jumping to reach higher ground in order to stalk the player, allowing him to trick and siege the player sometimes depending on the combat area. When alone, the Hell Knight isn't hard to kill since a Plasma Gun or any other automatic weapon can drain his health with ease, but when accompanied by other monsters he may have many chances to reach the player and engage melee attacks, which can do considerable damage. Especially in close quarters, he is very dangerous, as he will prefer to smash you with his leap attack, taking your health down fast. However, he is also highly agile, and can close the distance to the player in a blink of an eye. The main challenge about the Hell Knight is his health which makes him a bit tanky for the Rocket Launcher or other explosive weapons.

He can also execute regular melee attacks when close enough.

He still mostly acts like the easiest ones, by sprinting in the direction of the player while throwing fireballs from time to time, and upon reaching a certain distance, he will attempt to leap on the player and smash the ground, causing splash damage. The Hell Knight is the enemy which starts the hierarchy of harder monsters to kill, placing roughly between the mid-tier and the high-tier.

Doom 1 hell knight