They Are Billions: Infected Swarm #12
The twelfth mission in the game from the Infected Swarm genre in They Are Billions. Similarly to the previous mission - The Forbidden Forest, after which this mission will be unlocked - introduces a new enemy Infected Mutant. There are 40 of them to be eliminated. In order to succeed, you need to move your units properly. This chapter contains a walkthrough and tips for this rather difficult type of missions.
How to unlock and goals
How to unlock: unlocked after completing the Forbidden Forest mission
Mission objective:
- Destroy all infected.
- Survive all the hordes.
The mission

- There are "only" 40 enemies to defeat here, these are only Infected Mutants that you have already met during the Forbidden Forest mission. Fighting these rivals looks very different - you have to focus on as much injury as possible, set in the shortest possible time, while blocking their movement.
- Deploy 3 rows of Wasp turrets around the main building, and behind them 2 rows of Soldiers, and the resulting space inside fill with Snipers. The ratio of Soldiers to Snipers should be 2 to 3.
- For the remaining Empire Points (1000-1500) set up Stakes Traps or Wire Fence Traps, to at least slightly slow down the attack of enemies.
- After the start of the battle, place the units as close as possible to the Wasp turrets so they could start the attack as early as possible.
- Enemies will approach from four directions - North, South, East and West - but they will approach the fortifications every several seconds. The first wave will come from the North - send most of your troops there to quickly eliminate the mutants, and then send troops to the southern part of the fortifications, where more opponents will come.
- From this point on, you should often use the active pause (activated by pressing the SPACEBAR) and monitor the movement of enemies on the map. Send troops to where the attack will take place - the faster you eliminate a group of mutants, the less damage they will cause to your fortifications, thus troops can be sent to another side.
Tips

Finally, it is worth mentioning a few tips that will facilitate the completion of this mission, namely:
- Stakes Traps or Wire Fence Traps can prove useful here, as they significantly reduce the speed of these fast-moving enemies - it's hard, however, to "measure" where to install them so that the enemy steps over them.
- Land Mines are completely useless, as well as Rangers and barricades.
- The Lucifer units are an alternative to Wasp turrets - they are costly, however they will be able to withstand a few enemy attacks before being destroyed, and a very fast regeneration of health allows, with the appropriate micromanagement, to change wounded units to return to the battlefield within 10-15 seconds.
- They Are Billions Guide
- They Are Billions: Campaign walkthrough guide
- They Are Billions: The New Empire campaign
- They Are Billions: Story campaign - a few words of introduction to They Are Billions walkthrough
- They Are Billions: Mission 01 - The Hidden Valley
- They Are Billions: Mission 02 - The Last Bunker
- They Are Billions: Mission 03 - The hunter's Meadow
- They Are Billions: Mission 04 - The Crossroads
- They Are Billions: Mission 05 - Alpha Communications Center
- They Are Billions: Mission 06 - The Weapons Factory
- They Are Billions: Infected Swarm #1
- They Are Billions: Infected Swarm #2
- They Are Billions: Infected Swarm #3
- They Are Billions: Mission 07 - The Coast of Bones
- They Are Billions: Infected Swarm #4
- They Are Billions: Mission 08 - The Narrow Pass
- They Are Billions: Mission 09 - The Mines of the Raven
- They Are Billions: Mission 10 - The Lands of the Giant
- They Are Billions: Mission 11 - Cape Storm
- They Are Billions: Infected Swarm #5
- They Are Billions: Hydra Power Plant
- They Are Billions: Mission 12 - The Frozen Lake
- They Are Billions: The Foundry
- They Are Billions: Mission 13 - The Lowlands
- They Are Billions: Gamma Medical Center
- They Are Billions: The Nest of the Harpy
- They Are Billions: The Lonely Forest
- They Are Billions: The Oasis
- They Are Billions: Infected Swarm #6
- They Are Billions: Infected Swarm #7
- They Are Billions: Infected Swarm #8
- They Are Billions: Infected Swarm #9
- They Are Billions: The Prison
- They Are Billions: Steel Fortress
- They Are Billions: The Valley of Death
- They Are Billions: Omnicron Laboratory
- They Are Billions: The Noxious Swamp mission
- They Are Billions: Infected Swarm #10
- They Are Billions: Infected Swarm #11
- They Are Billions: The Villa of Terror mission
- They Are Billions: The Resistance
- They Are Billions: The Broken Land
- They Are Billions: The Forbidden Forest
- They Are Billions: Infected Swarm #12
- They Are Billions: The Wasteland of the Giants
- They Are Billions: The Phoenix Project
- They Are Billions: Infected Swarm #13
- They Are Billions: Infected Swarm #14
- They Are Billions: The Highlands
- They Are Billions: Infected Swarm #15
- They Are Billions: The Goddess of Destiny
- They Are Billions: El Dorado Mission
- They Are Billions: The New Empire campaign
- They Are Billions: Campaign walkthrough guide
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