API 1 package, version 1.0.1. Enable it in Mods at the main menu and apply the selection. The normal dependency selection also enables iron_coast_scout, iron_coast_turret, iron_coast_boss_4, pulse_cannon, seeker_swarm, ion_lance, iron_coast_music.

Mission iron_coast_mission_4:mission_04: Iron Coast 4 — Stormwall. Destroy four required turrets and Stormwall Arsenal. Required ground objectives remain reachable; escaping optional aircraft never counts as a kill. Elapsed time alone does not finish the mission.

Scheduled spawn totals for Training / Rookie / Veteran / Elite are 35 / 50 / 65 / 84. These are enabled scheduled entries, not simultaneous live-enemy counts. Groups can overlap when earlier enemies survive.

Align the forward guns with required targets while moving around incoming shots. If carried, select Field Repair or coolant with Cycle and use Special: they restore 25 or 30 energy respectively and consume a real item. Shop purchases and refills still cost credits.

Equipment supplied by the mission

A temporary Pulse Cannon trial is supplied when needed and capacity allows. Hold Fire to use it alongside the forward guns; the temporary item is returned after the mission.

Validation and history

See the current Iron Coast retune results and limits. Package-local acceptance reports, validation results and retained test sources describe pre-retune 1.0 behavior unless a result explicitly identifies the newer package and runner. They remain historical material, not current playthrough guarantees.