IRON NEST Missions List: All 15 in Order
How many missions are in IRON NEST? IRON NEST has 15 campaign missions, from Calibration Fire to 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 index. Separate walkthroughs appear only where current records support useful, mission-specific steps.
Players often call the campaign stages levels, but the game and its achievements present them as missions. Both searches lead to the same 15-stage campaign list below.
On this page: all 15 missions and levels · Mission 3 guide · Mission 4 guide · where to start
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.
Mission 3: Liberation
Mission 3 has a distinct route and troubleshooting job beyond the campaign list. The dedicated IRON NEST Mission 3 guide covers the five reported infantry targets, the armored ammunition cache, Scout Plane limits, AP shell choice, missing-target troubleshooting, and the official For Their Own Good and Exemplary Service achievements.
Use the dedicated page for Liberation steps; this page keeps the campaign list and mission order together.
Mission 4: Counter-Battery
Mission 4 has a separate time-pressure and reacquisition task. The dedicated IRON NEST Mission 4 guide covers opening preparation, the two-phase community-reported route, later-battery troubleshooting, Scout/STAR evidence boundaries, and the official First Reply and Distinguished Conduct achievements.
Use the Mission 4 page for the current walkthrough. The older mechanics page explains Demo-era statements and version conflicts, while this page remains the complete 15-mission index.
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-phase problem where reconnaissance choices and precomputed targets matter. Open the Mission 4 walkthrough for the current task route, and the Counter-Battery mechanics guide for Demo history and unresolved boundaries.
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.
The current release is single-player. Check the multiplayer and co-op status for the official future plan without mixing it into the campaign mission count.
Why only some missions have separate guides
An individual mission receives its own guide only when reliable current records support steps, troubleshooting, and a useful answer. Repeating only a mission title, an achievement name, and generic tips would not help a stuck player.
Missions 3 and 4 have separate guides because they present distinct problems and enough current information exists to explain them. Mission 7 and Siege of Cartagena remain in the campaign list until equally useful route details can be confirmed.
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.
What the campaign list does not include yet
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.
Before relying on any future mission route, check the game build, objective sequence, new mechanic, relevant achievement, Medal conditions, and direct source. Older behavior should remain labelled when a patch changes it.
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.
Mission count, order, and levels terminology reviewed August 26, 2026. The 15-mission inventory and achievement names remain official-confirmed and cross-checked. Mission-specific steps stay on their dedicated guides rather than being repeated on this campaign index.