How to Complete Spring Cleaning Mission, Act 3 Tier 4 Mission in MW3 Zombies

Last Updated on: 12 January, 2024 | 4:06 AM

If you have been grinding through the Modern Warfare 3 Zombies, you must be aware that missions are an inseparable part of the story. As you complete missions, you will progress to the next step of the story. So, missions can’t be ignored, if you want to reach the climax of the story. Additionally, the Zombies mode has the most innovative missions of the game. They take players to the different sides of the map and ask them to complete activities that give them a better understanding of the Urzikstan map. So, if you are trying to complete the Act 3 Tier 4 missions and looking for some help to know how to complete Spring Cleaning mission, this guide will help you with it.

However, before going deeper into the steps to find the best way to complete the mission, let’s check the objectives of this mission.

What are the Objectives of Act 3 Tier 4 Mission Spring Cleaning?

If you are planning to drop into the Spring Cleaning mission, you must be sure of the objective and the strategies to complete it. We will discuss the strategies in detail in the next section, for now, let’s check the objective of this mission:

Clear an Infested Stronghold in the high-threat zone.

This mission is pretty different from others in the sense that it has only one objective to complete. But that’s not a relaxing thing at all. This one objective is enough to eliminate you a few times if you are not sure of the process and equipment to bring.

Now that you are aware of the objective, let’s check the process to complete it.

Best Strategy to Complete Spring Cleaning Mission in Act 3 Tier 4 MW3 Zombies

After going through the objective, one may wonder how a simple mission like this is the only task in Act 3. Apparently, this mission seems nothing complicated, but the fact is different. If you notice the mission properly, you can see this mission must be completed in the most difficult zone of the map. The infested stronghold must be located in a high-threat zone. Therefore, the apparently simple mission can become the most dangerous one in an instant if you dive into it without preparation.

So, before you jump in, first have a tier 3 pack-a-punch weapon, lots of Self-revive kits, armor plates, and required perks. These perks may include, Juggernog, Speed Cola, and Quick Revive. All these are free perks that players can easily acquire by completing missions. For detailed information, go through our guide on this: How to Find All Free Perks in MW3 Zombies

Apart from all these, infected strongholds are not safe to roam around without a Gas Mask. As you reach close, you will see yellow poisonous gas around the location. So, it is recommended to have a Gas Mask. Players can purchase it from a Buy Station for 1000 Essence, or they can have it from clearing the mercenary stronghold. Sometimes mercenaries drop Gas Masks. Otherwise, you must have it from random mercenary caches inside a Mercenary Stronghold. However, the second method can’t guarantee you a Gas Mask. It’s your luck. If you are lucky, you can get it on the first attempt; otherwise, you have to spend some time in search of it.

From the above preparation process, you must have understood that this mission can be done immediately after you start a match. You need some time to prepare these required items. Once you have collected all, open your tac-map to locate an infected stronghold. Search through the high-threat zone and mark one stronghold that you can clear.

From previous experience, you must have a good idea that the Infected Stronghold can be cleared once you eliminate all the cysts. Each stronghold has multiple cysts to destroy, but this target becomes challenging because the zombies won’t let you do that easily. Theoretically, this task may not seem challenging, but it is the most difficult one as a swarm of zombies starts attacking you from every side as soon as reach close to the stronghold.

This mission will be a difficult one even in the medium-threat zone, but this time, you have to enter an infected stronghold in a high-threat zone where the high-tier (level 3) zombies will welcome you. For this mission, we recommend having SMG or LMG that players can use without the frequent trouble of reloading. Alternatively, you can use a sniper to aim the cysts from a distance. Also, make sure you have enough ammo.

Once you are ready, travel to the Stronghold and start clearing the zombies. These undead creatures will start chasing you as you reach close to the stronghold and even inside the the stronghold, you will find lots of zombies. We suggest not staying inside the stronghold for a long time. Attract the zombies outside and kill them. Staying in a closed place can go against your strategy. Check both floors of the stronghold to find all 15 cysts. The number is surprising, but make sure you have eliminated all the cysts to complete the mission.

Fortunately, this mission doesn’t require you to exfil. As soon as you clear the infested stronghold and survive, the mission will be completed.

Rewards For Completing the Spring Clearing Mission

Rewards are the primary motivation behind completing missions. So, all MW3 Zombies missions give players rewards to boost their minds for completing quests. If you successfully complete the Spring Clearing mission, you will get the following rewards:

Death Rig Sticker
2500 XP

Though the first reward is not something very useful, the second one can instantly increase your level. If you are trying to level up faster and unlock new perks and equipment, XP can be the best reward for you. So, having a squad or at least a friend may help you survive and complete the mission in a single attempt. Otherwise, you may need a few more attempts.

That’s all you need to know about how to complete the Act 3 Tier 4 mission Spring Clearing in MW3 Zombies. Though this mission can be done alone, we still suggest bringing at least one teammate. Zombies in the high-threat zone can’t be taken lightly at all.