They Are Billions

34 achievements

Ultra Rare×16

Very Rare×6

Rare×6

Uncommon×4

Common×2

About They Are Billions's achievements

They Are Billions has 34 Steam achievements, 16 of them ultra-rare — unlocked by under 5% of players. The rarest is "Infected Killer Level 10", earned by just 0.5% of players. Below is the complete achievement list with global rarity and a full achievement difficulty breakdown.

Rarest achievement

0.5%

of players earned "Infected Killer Level 10"

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Community Ratings

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Difficulty—

Easy → Brutal

Enjoyment—

Meh → Loved it

Grindiness—

No grind → Huge grind

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All They Are Billions achievements

34 achievements

Infected Killer Level 10

100 Millions infected killed!

Ultra Rare0.5%

Infected Killer Level 9

50 Millions infected killed!

Ultra Rare0.7%

Peaceful

Win a Survival game (Score Factor >= 100%) with no new units trained.

Ultra Rare1.3%

Ranger Revenge

Win a Survival game (Score Factor >= 100%) with just Rangers in your army. No Attack Towers allowed.

Ultra Rare1.4%

Sniper Slaughter

Win a Survival game (Score Factor >= 100%) with just Snipers in your army. No Attack Towers allowed.

Ultra Rare1.5%

Best General

Win a Survival game (Score Factor >= 100%) with no casualties. No Attack Towers allowed.

Ultra Rare1.5%

Soldier Wrath

Win a Survival game (Score Factor >= 100%) with just Soldiers in your army. No Attack Towers allowed.

Ultra Rare1.6%

Open Mind

Win a Survival game (Score Factor >= 100%) without using walls, gates and towers.

Ultra Rare2.0%

For Quintus! Level 4

Win The New Empire Campaign with a score of 70.000 victory points.

Ultra Rare2.0%

No Towers Needed

Win a Survival game (Score Factor >= 200%) without using Attack Towers like Ballista or Executor.

Ultra Rare2.1%

Infected Killer Level 8

10 Millions infected killed!

Ultra Rare2.2%

For Quintus! Level 3

Win The New Empire Campaign with a score of 40.000 victory points.

Ultra Rare2.6%

Unstoppable

Win a Survival game (Score Factor >= 100%) without pausing the game.

Ultra Rare3.2%

For Quintus! Level 2

Win The New Empire Campaign with a score of 25.000 victory points.

Ultra Rare3.5%

Infected Killer Level 7

5 Millions infected killed!

Ultra Rare3.8%

Colony Mayor Level 4

Build a colony with 10.000 colonists.

Ultra Rare4.8%

For Quintus! Level 1

Win The New Empire Campaign with a score of 10.000 victory points.

Very Rare5.9%

Infected Killer Level 6

2 Millions infected killed!

Very Rare7.4%

Survivor Level 4

Win a Survival game on Brutal mode.

Very Rare8.1%

Infected Killer Level 5

1 Million infected killed!

Very Rare12.1%

The Most Wonderful Colony

Build the six wonders in your colony.

Very Rare13.8%

Survivor Level 3

Win a Survival game on Challenging mode.

Very Rare14.1%

Survivor Level 1

Win a Survival game on Easy mode.

Rare15.4%

Infected Killer Level 4

500.000 infected killed!

Rare19.1%

Colony Mayor Level 3

Build a colony with 5.000 colonists.

Rare19.4%

Survivor Level 2

Win a Survival game on Accesible mode.

Rare20.3%

Giant Slayer Level 3

Kill three Infected Giant on the same map.

Rare20.9%

Giant Slayer Level 2

Kill two Infected Giant on the same map.

Rare22.7%

Giant Slayer Level 1

Kill an Infected Giant.

Uncommon36.9%

Infected Killer Level 3

100.000 infected killed!

Uncommon39.3%

Colony Mayor Level 2

Build a colony with 2.000 colonists.

Uncommon40.4%

Infected Killer Level 2

50.000 infected killed!

Uncommon47.1%

Colony Mayor Level 1

Build a colony with 1.000 colonists.

Common55.4%

Infected Killer Level 1

10.000 infected killed!

Common61.8%