How to Beat Orcus Boss

The Orcus is the final boss in Zakhaev's Stronghold during the Act 3 Story Mission in Call of Duty: Modern Warfare 3 (MW3). Read on to learn the location of Orcus, tips for killing Orcus, and what the Orcus' attack patterns are.

How to Beat Orcus

How to Kill a Orcus
Get Perks Before Starting the Fight Aim For The Weak Points Ask Your Squad for Help Use Epic or Legendary Weapons With Pack-A-Punch 2 or Higher

Get Perks Before Starting the Fight

Use a Jugger-Nog Can and Speed Cola Can before you face Orcus, as these perks can drastically help you throughout the fight. Additionally, you can also use a Deadshot Daiquiri Can, as this will help you clear out the zombies and mercenaries before starting the Orcus fight.

All Zombies Perks and Best Perks Tier List

Aim For The Weak Points

You will notice that Orcus has several exposed areas that glow purple as soon as it spawns. These are the weak spots of Orcus, and shooting them allows you to deal more damage. Focus your shots on these parts to take Orcus down much faster.

Ask Your Squad for Help

Invite other players on the map to join your squad and ask your team for help before starting the mission and facing Orcus, as tackling it alone can be extremely difficult due to the number of mercenaries and zombies you will encounter.

Zombies Squad Size and Squads Explained

Use Epic or Legendary Weapons With Pack-A-Punch 2 or Higher

Enemies during this mission are tough since you will be in the Medium Threat Zone. Try to look for a weapon with Epic or Legendary Rarity and use it to Pack-A-Punch Level 2. This will help you clear enemies much faster and make the mission easier.

Rarity and Pack-a-Punch Damage Chart

Orcus Attack Patterns

Slam Attack

The Orcus will sometimes perform a slam attack, hitting every player in its path. As soon as the Orcus winds up for this attack, immediately strafe and avoid moving forward or backward to prevent getting caught.

Laser Attack

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The Orcus has a slow laser attack that takes a lot of time before it actually fires. Take advantage of this by dealing as much damage as you can whenever Orcus performs this attack. You can easily avoid taking damage by simply strafing and moving away from the direction of the laser.

Purple Orbs Attack

After dealing enough damage to the Orcus, it will start summoning purple orbs that chase you and then explode on contact. You can easily outrun these orbs, and they will explode on their own after a short period.

Orcus Location

Exfil to Zakhaev's Stronghold

Upon unlocking the Act 3 Story Mission, you will notice an Exfil Icon with a Yellow Star on your Tac Map. Exfiltrating from this spot will deploy you to Zakhaev's Stronghold, where you will face the Orcus as your final objective. The location of this exfil is fixed but will only appear if you or other members in your squad have this mission unlocked.

Defeat Zakhaev Walkthrough

Orcus Rewards

Bone Collector Operator Skin

Completing the Act 3 Story Mission and defeating the Orcus rewards you with the Bone Collector Operator Skin for Ripper.

Operator List and All Operator Skins

The End? and One Against All Achievement

One Against All G: 90	Kill Orcus while in a 6 person squad in MWZ
The End? G: 30	Complete Act III in MWZ

Completing the Act 3 Story Mission in Modern Warfare 3 Zombies unlocks The End? trophy and achievement. You can also earn the One Against All trophy and achievement by defeating the Orcus, as long as you have 6 members in your squad during the mission.

Note that you do not need to have this as your current mission to complete it. All you need is for someone in your party to have this mission active.

Trophy Guide and List of Achievements

Modern Warfare 3 (MW3) Related Guides

Zombies Mode Walkthrough and Guide

All Zombies Guides

All Zombies Challenges and Enemies