http://ucguides.savagehelp.com/Doom3/enemies.htm

Game Overview, Tips & Analysis
Enemies

ArchVile
	The Archvile can be one of the most dangerous enemies in the game. Not only are they powerful and hard to kill, they can also summon other enemies to aid them. Kill them before any other enemies. Try to keep out of their line of sight and at a distance using long range weapons such as the BFG / Rocket Launcher wherever possible. If you are at close range try to aim for the head as you will cause 2x the damage.
	Health Claw Damage Firewall Flamewall Incinerate	425 12 20 20 20
Cacodemon
	An airborne demon that can be hard to kill due to its toughness and its ability to easily dodge your attacks. Rocket launcher shots in particular can easily be dodged by the Cacodemon. Spits out fireballs with splash damage, try to avoid these by staying under the Cacodemon while you use rapid fire weapons that will 'bounce it around' and inflict damage. A Cacodemon's fireballs can sometimes be taken out with the plasma gun before they hit you.
	Health Fireball Direct Fireball Splash Fireball Splash Radius Melee	200 12 5 48 20
Commando Zombie
	Unrelenting and quite brutal in their attacks,  armed with either a chaingun or a tentacle, commandos can be a dangerous enemy. Try to keep a reasonable distance from Commandos with a chaingun, the weapon is not as accurate at longer distances. If you are facing one or two use the shotgun or a rapid fire weapon. If Commandos are attacking in number use the rocket launcher or grenades and finish them off with the shotgun or a rapid fire weapon such as the plasma gun. If you are at close range try to aim for the head as you will cause 2x the damage.
	Health Melee Chaingun Push / Kick Tentacle	225 12 20 12 12
Chainsaw Zombie
	Chainsaw Zombies can be a worthy opponent at close range. However if you keep a reasonable distance and use the shotgun or rapid fire weapons such as the machine gun, chaingun or plasma gun to circle them they are easily defeated. If you are at close range try to aim for the head as you will cause 2x the damage.
	Health Chainsaw Push / Kick Melee	125 15 12 20
Cherub
	The Cherub is an airborne demon that is perhaps one of the most annoying enemies in Doom3. Fast with quite high damage from its claws and leap attacks this demon is best attacked with the shotgun at close range or the machinegun, plasmagun or chaingun at longer ranges. If you are at close range try to aim for the head as you will cause 1.25x the damage.
	Health Claw Leap Attack Melee	50 5 15 20
CyberDemon
	One of the four bosses in Doom3. The almighty CyberDemon, large with a devastating rocket launcher attached to one arm that can crush / kill with one shot. The toughest boss, this demon can take endless shots, even from the BFG. The CyberDemon moves quite slowly for its size but can out-walk you, keep your distance and keep running, you must use the soul cube as your main weapon against the Cyberdemon. Use your most powerful splash damage weapons such as the rocket launcher and the BFG against the Imps and Maggots while the CyberDemon briefly pauses to prepare to fire. Recharge your soul cube by killing demons around you. Rapid fire weapons such as the chaingun and plasma gun are of little use.
	Health Stomp / Smack Rocket Direct Rocket Splash Rocket Splash Radius	4000 400 40 40 40
Flaming Zombie
	Flaming Zombies can be a problem when at close range. However if you keep a reasonable distance and use a combination of the shotgun and rapid fire weapons such as the machine gun, chaingun or plasma gun while circling them they are easily defeated. If you are at close range try to aim for the head as you will cause 2x the damage.
	Health Melee Flame	150 12 Unknown
Guardian
	One of the four bosses in Doom3. Being blind the Guardian is quite useless without the 'seekers' it sends out to spot its enemies. Take out each seeker quickly with the shotgun or chaingun, or at least dodge its searchlight. Tough, this demon can take many shots, even from the BFG. Try to focus your shots on the blue/red glow above as it spawns new seekers. The demon is quite slow, so keep your distance, destroy / avoid the seekers and use your most powerful splash damage weapons such as the rocket launcher and the BFG.
	Health HeadButt Smash Smash Splash Smash Splash Radius Pound Ground Charge	800 30 20 20 100 20 30
Hell Knight
	Hell Knight, a powerful enemy, can do a lot of damage should the plasma balls hit you or they get close enough to toss you around. Can be slow moving and can take a lot of damage. Keep your distance and use the rocket launcher or BFG. At closer range use the chaingun, shotgun or plasma gun to inflict as much damage as you can. If you are at close range try to aim for the head as you will cause 2x the damage.
	Health Plasmaball Plasmaball Splash Plasmaball Splash Radius Smash Splash Smash Splash Radius Claw Bite	900 30 45 120 100 20 25 30
Imp
	As long as you are not surprised by the Imp it is fairly easy to kill and you can easily avoid their fireballs at distance. Fireballs can sometimes be taken out with the shotgun or plasma gun before they hit you. Keep an eye open for them in crevices (ceiling and ground). If you are facing one or two use the shotgun or a rapid fire weapon. If the Imps are attacking in number use the rocket launcher or grenades.
	Health Fireball Fireball Splash Fireball Splash Radius Leap Attack Claw	130 12 5 50 8 8
Lost Soul
	Lost Souls are airborne demons that travel in packs. Fast but fairly easy to kill with rapid fire weapons such as the chaingun and machinegun. The weapon of choice if Lost Soul numbers are low is the shotgun. Hide / keep your distance when large packs of Lost Souls are approaching.
	Health Melee Charge	20 12 12
Maggot
	Maggots, while easy to kill, are very fast and can easily surprise you with their attacks. Weapon of choice is the shotgun, rapid fire weapons such as the chaingun or machinegun are also of use. If you are at close range try to aim for the head as you will cause 1.5x the damage.
	Health Claw Leap Attack	80 6 16
Mancubus
	Mancubus are incredibly slow but that is balanced with their ability to take a lot of punishment before they are killed. Their rapid firing plasma guns can cause a lot of damage, both direct and splash. However take advantage of their slow speed by taking cover / keeping a reasonable distance, using a mixture of the rocket launcher and rapid fire weapons such as the chaingun or plasma gun and they can be defeated. If you are at close range try to aim for the head as you will cause 1.5x the damage.
	Health Rocket Rocket Splash Damage Rocket Splash Radius Stomp	1000 20 20 40 40
Pinky Demon
	Pinky Demon, fast and dangerous with the ability to inflict damage by ramming you, using its claws or using its teeth. Try not to get cornered by this demon, keep your distance, keep moving and make best use of the shotgun, chaingun or rocket launcher. At close range the weapon of choice is the shotgun.
	Health Melee	220 10
Revenant
	Revenants are one of the fastest enemies in the game. While they can be killed with a few rockets, do not underestimate the Revenant. Their ability to attack from a long distance using a pair of heat seeking missiles and use their hands in close combat make them quite a formidable opponent. Missiles can sometimes be taken out with the plasma gun before they hit you. To defeat the Revenant keep moving and make best use of the plasma gun, chaingun, shotgun and rocket launcher. If you are at close range try to aim for the head as you will cause 2x the damage.
	Health Missile Missile Splash Damage Missile Splash Radius Claw Melee	272 10 10 30 16 16
Sabaoth
	One of the four bosses in Doom3. A formidable opponent, armed with both a pincher and BFG, it may push you over the edge / crush you under its tracks if you get too close. One shot from Sabaoth's BFG may kill you so destroy the green BFG shot with the most accurate and powerful weapon you have. If a BFG shot has been fired keep your distance, move out of line of sight / shoot down its BFG shots and take advantage of its slow turning speed in tight corners by circling it while firing high damage weapons at it's torso/head area such as the BFG or soul cube. Rapid fire weapons such as the plasma gun or chaingun may also be of use at close range.
	Health Melee BFG BFG Splash Damage Spash Radius	1750 40 200 100 150
Tick
	Do not be fooled by their size or low health. Ticks usually attack in swarms, often surprising their enemy by emerging out of crevices in the ceiling, floor or walls. When in swarms these can easily be killed with rocket launcher or rapid fire weapons such as the machinegun, chaingun and plasma gun. If attacking alone use the shotgun, machinegun, chaingun or plasma gun.
	Health Explosion Explosion Radius	20 50 100
Trite
	Often confused with the Ticks, these demons also attack in packs. Often surprising their enemy by emerging out of crevices in the ceiling, floor or walls, they can be devastating. When in packs these can be killed with rocket launcher or rapid fire weapons such as the chaingun and plasma gun. If attacking alone use the shotgun, chaingun or plasma gun.
	Health Leap Attack Bite Explosion Explosion Radius	20 20 8 50 100
Vagary
	One of the four bosses in Doom3. Half human and half spider she can be a formidable opponent at close range and dangerous at a distance. At close range you must avoid her teeth and pinchers, at distance you must avoid the objects she hurls at you using her telekinetic ability. Keep your distance, avoid objects by circling while using grenades and rapid fire weapons such as the plasma gun / chaingun. If you are at close range try to aim for the head as you will cause 2x the damage.
	Health Pincher Melee Objects	1300 12 12 12
Wraith
	As long as you are not surprised by the Wraith teleporting to your position it is fairly easy to kill. You will notice a bright orange/yellow glow before they teleport to your location. Use this to help avoid its close combat attacks and it is fairly easy to kill. If you are facing one or two use the shotgun and/or a rapid fire weapon. If the Wraith are attacking in number use the rocket launcher or grenades. If you are at close range try to aim for the head as you will cause 2x the damage.
	Health Claw Melee	130 8 8
Zombies
	Zombies are slow and easy to kill, armed at best with a wrench. May be found in groups of three or more, take advantage of their slow speed by running them round in circles while using weapons such as the plasmagun and shotgun. If they are attacking in groups weaken them with the rocket launcher and finish them off with other weapons. If you are at close range try to aim for the head as you will cause 2x the damage.
	Health Melee Wrench	50 to 150 20 20
Z-Sec
	Z-Sec guards are not as unrelenting and brutal in their attacks as the commandos, however they can still be a dangerous enemy. Armed with either a machinegun, pistol or shotgun, some may have riot shields that make them harder to kill. If you are facing one or two use the shotgun or a rapid fire weapon. If they are attacking in number use the rocket launcher or grenades and finish them off with the shotgun or a rapid fire weapon such as the machinegun / plasma gun.
	Health Machinegun Pistol Shotgun	50 to 110(Shield) 3 per bullet 4 per bullet 24 (3x8)