IRON NEST Missions in Order

The full release has a 15-mission sequence ending with White Shells. Mission names are confirmed by official Steam achievements; numbering and order are cross-checked against the Speedrun.com structured levels API and current community data.

Scope note: This is a campaign hub, not a fabricated walkthrough for every mission. Detailed pages are added only when there is independent search demand and enough current evidence.

All 15 missions and achievements

#	Mission	Story or completion achievement	All-gold achievement
1	Calibration Fire	Just Calibrating	Duty Fulfilled
2	Fire and Light	Honour Salute	Marksman's Honour
3	Liberation	For Their Own Good	Exemplary Service
4	Counter-Battery	First Reply	Distinguished Conduct
5	Iron Road	All Clear	Crowned in Brass
6	Siege of Cartagena	Breakout	Naval Commendation
7	The Gorge	Cold Start	Valour Under Fire
8	Rock of Gibraltar	Flying False Colours	Order of Merit
9	Dead Reckoning	Steady Hands	Quiet Precision
10	Fire on Call	The Gun Answers	Iron Discipline
11	High Tide	Beachhead Denied	Coastal Defence Medal
12	Blind Fire	Nothing Was There	Unshaken
13	Phantom Battery	Mirror Image	Master Gunner
14	Final Harvest	In the Dark	Night's Precision
15	White Shells	One of four ending achievements	Pride of Castile

Some lists show fourteen ordinary completion achievements because White Shells resolves through one of four endings. That does not make it a fourteen-mission campaign.

Where to start

Calibration Fire teaches the firing chain. Use it to verify current controls and the first-shot sequence described in our beginner guide.

Counter-Battery introduces a time-sensitive multi-wave problem where reconnaissance choices and precomputed targets matter. Open the Counter-Battery guide for the strongest current evidence and unresolved timer details.

White Shells carries the four official ending achievements. The endings guide separates official achievement facts from current community-tested trigger routes.

If you are optimizing campaign performance, the gold medals checklist maps every mission to its official all-gold achievement and labels current threshold quality.

Why most missions do not have thin pages yet

An individual mission receives its own guide only when it has a distinct search task and enough material to answer it. Repeating the mission title, an achievement name, and generic tips would create a low-value page and split internal authority.

The first planned deeper mission page is Siege of Cartagena because it has independent demand and enough mission-specific material. It remains a later P1 page rather than blocking this P0 launch.

Older community walkthroughs often cover three demo missions. They are useful historical clues but cannot fill objectives, enemy counts, unlock rules, or failure conditions for the full fifteen-mission release. Those details require current-build play evidence.

Campaign evidence still needed

The public evidence does not yet support a complete per-mission table of coordinates, enemy numbers, difficulty changes, unlock conditions, save rules, and failure states. This site will not infer them from achievement titles.

For future updates, each mission record should include the game build, objective sequence, new mechanic, relevant achievement, medal conditions, and direct evidence. Changes should be versioned rather than overwritten.

Sources and methodology

Steam global achievements — official mission and achievement names.
Speedrun.com levels API — structured Mission 1 through Mission 15 order, cross-checked with current guides.
Current Steam gold data guide — community mission/medal mapping and current data notes.
GameDB mission walkthrough hub — older, mainly demo-era structure reference; not used to invent later mission details.

Reviewed August 9, 2026 for game build 1.0 (1558). Mission names: official-confirmed. Fifteen-level order: cross-checked.