Enable this individual mission package in the Mods screen. Dependency selection adds iron_coast_scout, iron_coast_turret, iron_coast_boss_5, pulse_cannon, seeker_swarm, ion_lance and iron_coast_music, each compatible with version 1.x. Choose Iron Coast 5 — Cinder Docks in the mission menu. This mission has no next reference; the optional Iron Coast campaign package supplies six-level progression while the level stays independently playable.

Destroy both armored furnace stations, then defeat Cinder Hammer to shut down the shipbuilding yard. The stations arrive at ticks 240 and 920 and stay at y=24 until destroyed. The boss arrives at tick 1660 and remains in the firing area. Killing the boss first still requires the stations. Victory awards 15,000 credits once, plus ordinary destruction rewards, including 1,200 per station and 1,800 for Cinder Hammer. The 2,600-tick duration is a catalog hint; waiting cannot win.

Original enemies join the custom scouts: two opposing diagonal sweep libraries (base:enemy_0_21, base:enemy_0_22), two curved-entry libraries (base:enemy_1_25, base:enemy_1_26), a straight light fighter (base:enemy_0_13) and a dock boat (base:enemy_0_8). Their original assets, banking, movement paths, projectiles, collision and rewards remain in the base registry, with no clones or overrides. These escorts and the ordinary turrets are optional targets. All native spawns are enabled on every difficulty.

Slag warnings alternate between the outer left and right lanes, followed 35 simulation ticks later by three falling shells. The central corridor stays clear. Three coolant injectors are supplied if inventory room permits, including the physical slot cost of reserve super-shields. A full 20-slot inventory can enter without losing equipment. No premium weapon is borrowed or required.

Hold Fire (default Ctrl), line up with each station and keep the ship near y=160. Alt or Shift changes selected equipment. Select Foundry Coolant Injector and press Special (default Z) when energy drops to 65 or below; each use restores 30 and consumes one injector. The item costs 15,000 credits per injector and has a five-unit capacity, matching the Iron Coast repair rate of 500 credits per shield unit. Ordinary forward guns keep firing while a coolant injector is selected. The shared Coastal Steel music loops through the mission; nine local cues cover approach, furnace warnings, slag, cannon fire, shutdown, boss arrival, coolant use and victory.

New generated terrain, briefing and transparent furnace-station masters are packaged as SD and HD PNGs. SD uses the original game palette; HD uses separate physical dimensions while preserving logical collision footprints. A reflected terrain period makes the repetition edges match exactly. The exact imagegen prompts, asset source hashes, procedural audio generator and generated outputs are tracked with the mod. See prompts.md, prompts.json, provenance.json and asset-report.json.

Regenerate the outputs with:

python3 RustRaptor/mods/iron_coast_mission_5/build_content.py
python3 RustRaptor/mods/iron_coast_mission_5/build_assets.py

Run RustRaptor/mods/iron_coast_mission_5/validate.sh for local original-data acceptance. Its control fixture uses only starter guns, bounded horizontal movement toward a station's x+8 coordinate (otherwise x=144), and selectable coolant when shield is at most 65. It tests normal registration resources (75 shield, 10,000 credits), the 100-shield fixture, identical repeated outcomes, all six native enemies appearing and moving, full-slot entry, one-time rewards and mission-state reset on re-entry. It does not directly damage enemies or refill shield during the controlled flight. Results are in validation-report.json. The original asset catalog is required locally and remains outside Git.

The final local run finishes at tick 1,818 (about 78 seconds) from normal registration resources with 71 shield, 31,950 credits and two coolant uses. Repeating the same controls produces an identical world digest. The 100-shield/zero-credit fixture finishes at the same tick with 66 shield and 21,950 credits using one coolant. All six native libraries were seen moving in every run; full 20-slot inventories with zero or four reserve super-shields preserved their equipment. Required objectives, one-time rewards and restarting with retained script state passed. Human difficulty and presentation remain subject to ordinary play testing.