Modern Warfare 3 Zombies Guide: How to Beat Infiltrator Tier 4 Mission

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Modern Warfare 3 Zombies Guide: How to Complete Infiltrator Tier 4 Mission

Call Of Duty: Modern Warfare 3 (2023)

By Felister Moraa

Published Nov 27, 2023

The latest rendition of Modern Warfare 3 Zombies follows the DMZ-mission style, where players must complete various story missions across the map. These missions are categorized into different Acts and tiers, and completing each allows players to advance and progress further. The missions take place on the Urzikstan map and task players to hunt items, kill specific operators, or complete Strongholds.

The Infiltrator mission is an Act 1 Tier 4 mission that requires players to find a key, clear a safe house, and retrieve an item from a safe. Players who complete this mission earn Raw Aetherium Crystal and +3000 XP. Here’s a guide on how to obtain the key and complete the mission.

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What Are the Objectives of the Infiltrator Mission in MWZ?

The Infiltrator mission in MWZ has three main objectives:

Acquire a Stronghold keycard
Clear a Terminus Outcomes Stronghold
Retrieve Terminus Outcomes Record from the Stronghold safe

How to Complete MWZ Infiltrator Mission

To complete the Infiltrator mission in Modern Warfare 3 Zombies, players must first get a Stronghold key by clearing a Mercenary camp or assaulting a Mercenary Convoy. Locate the camp in Threat Zone 1, head over, defeat all mercenaries, and loot the cache in the middle to obtain the Stronghold key and other valuable items. Alternatively, players can purchase the key at a Buy Station.

After obtaining the key, players unlock the Terminus Outcomes Stronghold, which they must complete. To do this, use the Stronghold key to open the safehouse and take down all the zombies in the building. The Zombies will attack players constantly, so players have to be stealthy and quick when working through the building. The goal is to move undetected and take out mercenaries in each room. Once players clear the building, they can complete the third objective.

Locate the Stronghold safe in the building and drill to open it, which will trigger an alarm for more enemies to attack. Players must clear this second wave of the undead, making it crucial to have the best guns for close-quarters combat and enough armor to defeat all enemies without dying. Once players have cleared the enemies, they can crack the safe to retrieve the Terminus Outcomes Record, which is a Cyphered Tablet.

Bring the tablet when exfiltrating the map to complete the Infiltrator mission. Completing the mission will unlock the Tier 5 missions in MWZ and reward players with 3000 XP and Raw Aetherium Crystal.