The astronaut enters a hospital transfer concourse because a window above it shows a constellation that was not there before the last death. A rail-mounted lamp can scan it, but the carriage is at the wrong end. Its station supply is visibly live. Releasing its mechanical brake starts the carriage moving at walking pace. The player can run ahead, fall behind or circle it. Bodies slow the carriage until its rail is cleared, then it continues.

The machinery wakes the concourse. About forty shambling patients spill from two wards across the central lane. A dozen faster creatures descend marked maintenance stairs in flanking groups; more silhouettes press behind ward glass. The player's later-game **Storm Choir** has automatic Projector fire, impact-powered arcs and a charge store, but begins this trip without its temporary transformations. Its short electrical chains help without dominating the space.

At the first junction the crowd thickens. The player stays near the packed centre so each arc finds another body, then cuts aside when the fast group arrives. The ward release is finite and visibly runs out. Clearing its committed crowd earns a choice under the proposed stage reward rule. In the paused journal the player chooses **Echoing Arc**: each Arc discharge can extend to two additional nearby targets, at a heat cost. It resumes the same danger when the journal closes.

At the next junction, the carriage trips a second marked ward release. Resolving it offers **Thunderhead**, adding a manual full-store burst to the same rig. Ordinary Projector impacts charge the store. Each Arc discharge spends its supplied charge; the extra jumps add heat. These two releases prepare the build for the final optional scan. At either junction the player can stop the carriage and leave by the walking route.

The final ward doors open ahead. Roughly one hundred enemies fill the concourse, with more flowing from announced sources. A tide closes from behind while fast groups cross the carriage's path. The player risks the dense middle, finishes charging and presses Thunderhead. Stored charge discharges through Arc and Projector together, then charging resumes automatically. **The intended climax** is blue-white branching light across the packed lane: the crowd collapses and the carriage surges through. The player turns an impossible screen into a route. Storm Choir below identifies the coverage rules still needed for that scale.

An unready player sees the crest turn against them. Flankers draw arcs away from the tide, bodies stall the carriage, and a heavy creature narrows the exit while hits strip condition. The choice is legible: spend Thunderhead early and face the main mass empty; hold the centre long enough to charge, risking death; or abandon the scan and flee, spending oxygen and position. The walking route remains usable without an overclock. Death changes the next route, but everything physical still carried returns aboard. The horde has teeth without deleting the loadout.

At the far window the final source gates close, stopping further arrivals. The player clears the creatures already beside the carriage or leaves them separated behind a pedestrian bulkhead before investigating. The “constellation” is a live map of rooms that are currently far apart. Its last line unfolds an overhead bridge toward the matching point—a route the player can walk now. An earlier recorded mark suggests another scan track may reveal a second bridge elsewhere. The player can push onto the new span with reduced oxygen or bring that recorded connection home and plan the next trip. Combat delivered access; knowledge points to a specific next action.

A **horde** surrounds routes, feeds a build continuously and changes the whole screen when it breaks. A developed encounter in a broad ward, dock or cargo artery might show 80–150 enemies together and pass several hundred through its full crest. Narrow corridors can show less while a continuous river arrives through doors, lifts and ducts. Hospitals, transit systems and sealed infested volumes are believable **source areas**: places holding bodies that can physically enter a connected route when disturbed.

4. **Break.** The player clears the finite release or completes a physical seal at its source. Sealing stops arrivals; creatures already inside still need clearing or safe separation before investigation. Music, enemy flow and the room's silhouette release together. The resulting lull belongs to inspection, salvage, route choice and discovery.

Killing faster than a source can feed buys room to move while it is still active. Outrunning the crowd buys escape. A resolved release stays spent in the current station arrangement; returning to the same source does not make it pay again. Further releases need their own announced physical source. A powerful build is allowed to erase an ordinary crest and enjoy the silence it bought. [Fighting the Horde](/Hold%20The%20Flood/Combat%20Rules) explains sources, stage rewards and the difference between a cleared lane and a quiet room.

Combat stays regular because exploration crosses inhabited volumes and because movement, machinery and fighting can wake adjacent source areas. Quiet rooms and earned breaks remain essential; without them, clues become visual noise and a climax has no shape.