Iron Nest DB

Reference

Achievements

All 33 achievements: one for clearing each mission, one for taking gold on every medal in it, and four for the endings. Unlock rates are Steam's live global figures.

8 achievements sit under 0.1% of players, and every one is a gold-medal award. Gold is the wall: clearing a mission is common, taking gold on every medal in it is not.

Duty Fulfilled72%Common

Earn gold on all medals in "Calibration Fire."

Gold on every medalCalibration Fire
Just Calibrating93.4%Common

Land the Calibration Fire.

Clear the missionCalibration Fire
Honour Salute85.2%Common

Deliver Fire and Light.

Clear the missionFire & Light
Marksman's Honour83.7%Common

Earn gold on all medals in "Fire and Light."

Gold on every medalFire & Light
Exemplary Service0.2%Ultra rare

Earn gold on all medals in "Liberation."

Gold on every medalLiberation
For Their Own Good72.6%Common

Enforce the Liberation.

Clear the missionLiberation
Distinguished Conduct0.4%Ultra rare

Earn gold on all medals in "Counter-Battery."

Gold on every medalCounter-Battery
First Reply54.3%Common

Silence the Counter-Battery.

Clear the missionCounter-Battery
All Clear41.1%Common

Intercept the Iron Road.

Clear the missionIron Road
Crowned in Brass<0.1%Ultra rare

Earn gold on all medals in "Iron Road."

Gold on every medalIron Road
Breakout28.2%Common

Break the Siege of Cartagena.

Clear the missionSiege of Cartagena
Naval Commendation<0.1%Ultra rare

Earn gold on all medals in "Siege of Cartagena."

Gold on every medalSiege of Cartagena
Cold Start23.5%Common

Survive the Gorge.

Clear the missionThe Gorge
Valour Under Fire0.6%Ultra rare

Earn gold on all medals in "The Gorge."

Gold on every medalThe Gorge
Flying False Colours21.3%Common

Strike the Rock of Gibraltar.

Clear the missionRock of Gibraltar
Order of Merit<0.1%Ultra rare

Earn gold on all medals in "Rock of Gibraltar."

Gold on every medalRock of Gibraltar
Quiet Precision<0.1%Ultra rare

Earn gold on all medals in "Dead Reckoning."

Gold on every medalDead Reckoning
Steady Hands18.1%Uncommon

Trust Dead Reckoning.

Clear the missionDead Reckoning
Iron Discipline1%Rare

Earn gold on all medals in "Fire on Call."

Gold on every medalFire on call
The Gun Answers14.3%Uncommon

Answer Fire on Call.

Clear the missionFire on call
Beachhead Denied9.7%Uncommon

Turn the High Tide.

Clear the missionHigh Tide
Coastal Defence Medal0.6%Ultra rare

Earn gold on all medals in "High Tide."

Gold on every medalHigh Tide
Nothing Was There8.8%Uncommon

Endure Blind Fire.

Clear the missionBlind fire
Unshaken<0.1%Ultra rare

Earn gold on all medals in "Blind Fire."

Gold on every medalBlind fire
Master Gunner<0.1%Ultra rare

Earn gold on all medals in "Phantom Battery."

Gold on every medalPhantom Battery
Mirror Image6.7%Uncommon

Hunt the Phantom Battery.

Clear the missionPhantom Battery
In the Dark5.1%Uncommon

Reap the Final Harvest.

Clear the missionFinal Harvest
Night's Precision<0.1%Ultra rare

Earn gold on all medals in "Final Harvest."

Gold on every medalFinal Harvest
A City in Celebration

A city that comes out to meet you.

How to reach it. Fire a signalling shell instead of a live one — a star shell, smoke, or propaganda. These are the white shells the operation is named for.

STARSMKPRPG

The shell bursts harmlessly over Barcelona. Bells ring, pots are beaten in the streets, and the King writes to thank the crew for not taking one step too far.

Clear the missionEndingWhite shells
A City Silent

A city wiped from the map.

How to reach it. Fire any destructive shell onto Barcelona. Twelve of the game's shells lead here — every high-explosive, armour-piercing, incendiary and cratering type.

HCHEAPHEAPHEATMCCLMNDRILEQKEINCNLEPLCMTHRM

The city is levelled. High Command records it as a lasting peace and turns the march north across the Pyrenees.

Clear the missionEndingWhite shells
A City Subdued

A city that kneels, and calls it peace.

How to reach it. Fire a chemical or anti-personnel shell — tear gas, phosgene, cyanogen, flechette or white phosphorus — onto the city.

TEARPHGNCYANFLCHWP

Barcelona's resistance collapses and it surrenders with its buildings intact. High Command notes that a city which can still work is worth more than one that cannot.

Clear the missionEndingWhite shells
Pride of Castile<0.1%Ultra rare

Earn gold on all medals in "White Shells."

Gold on every medalWhite shells
The Road Not Taken

A city spared, and a road no one else will ever walk.

How to reach it. Do not fire on the city at all. This ending is reached by destroying an artillery entity instead — the only branch with no shell filter on it.

The gun crew is reclassified hostile, the teleprinter prints TRAITOR, and the signal is lost. The city is spared.

Clear the missionEndingWhite shells

White Shells ends four ways, and which one you get is decided by the last shell you put over Barcelona — every shell in the game leads to exactly one of them. The four ending achievements still show no unlock rate: the game identifies them only as 15A–15D, and nothing proves which letter belongs to which ending, so pairing them with a figure would be a guess.