They Are Billions: The Nest of the Harpy
The Nest of the Harpy is another mission of the main campaign in They Are Billions. For the first time during the campaign you will encounter harpies, extremely fast opponents with a unique ability to break through the walls. During this mission, you will need to eliminate a few hundred units of these enemies. In this chapter you will find a walkthrough and advice related to The Nest of the Harpy mission available in story mode.
How to unlock and goals
Unlock method: unlock it after completing the frozen The Frozen Lake mission.
Mission objective:
- The number of colonies: 1600.
- Destroy all infected.
- Destroy all Villages of Doom.
- Restriction: the mission must be completed within 70 days.
The mission

- At the beginning, pay attention to a huge group of enemies located in the upper right corner of the map - these are Harpy, to which we will return later.
- Start the mission as usual - set up 3 Tents, then wait for the gold to flow and build 2 Hunter Cottages. For the rest of the gold build more Tents. Collect 300 gold to construct the Sawmill and build some more tents.
- In the meantime, send troops to scout the area. Be careful not to get too deep the map - enemies here are much more aggressive than in previous missions, and you will also encounter a new opponent.
- During this mission you will meet Harpies for the first time (in story campaign) - a new opponent. These are the fastest units in the game, dealing massive damage - a Ranger will be killed in a split second if Harpy attacks him. For this reason, you should not explore too much land around the base, because these creatures may be lurking in the vicinity. Remember that Harpies can jump over the wall.

- Start your expansion to the north - where you will find the deposit of stones on which the Quarry can be constructed. You'll find iron west of the stones and rocks.
- Build quarries on iron and stone deposits and then construct a wall around a base from east and west to prevent enemies from entering and infecting the buildings.
- It's worth clearing the eastern part of the map early - you'll find a lot of built-up areas there, and there's not a lot of enemies to kill.
- Systematically expand your colony, expanding the base to the north. When you reach approximately the center of the map, you will encounter Harpies regularly - Rangers are best suited for their elimination due to their damage and endurance. 3-4 Soldiers can eliminate a Harpy before it gets to them.
- When you've cleared most of the map from enemies, prepare for the final battle with hordes of Harpies in the top right corner of the screen. To eliminate them you need a large army of soldiers and snipers. If time is running out, create an army of 25-30 Soldiers and 30-40 Snipers - this formation will allow you to deal with the monsters without incurring excessive losses.
Tips

To sum the things up, a handful of advice on The Nest of the Harpy story mission:
- The first horde of the infected will appear on the 16th day - but you have nothing to worry about, there is a lot of time to prepare, and the horde itself will not be too numerous.
- It is worth to focus on cleaning up the areas located to the east - there is a lot of space for development, especially Farms. Expansion of this area will significantly facilitate the completion of the mission.
- Don't send small troops (2-3 units) to clear the area - from about the middle of the map there will be Harpies among the enemies, which can defeat such small groups of units alone or inflict heavy damage to your troops.
- Do not recruit Rangers during this mission. With the exception of a few units that are worth training as long as the access to the Soldiers is difficult, these units should not be recruited because of the presence of Harpy - Rangers are useless in the fight against Harpies.
- Don't attack a Harpy group in the top right corner of the map without a suitable army - if you provoke them and can't deal with them, they can start invading the colony and quickly infect a lot of buildings. Remember that the walls will not stop them - they can jump over them.
- 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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