Move
Arrow keys or WASD. On a phone, hold the directional buttons.

Charge
Space or the large button. The fuse lasts 1.9 seconds. You cannot walk back through a placed charge.

Escape
Solid steel stops fire. A crate absorbs one blast and breaks. Fire extends in four straight lines, never around corners.

Rescue
Walk over each amber helmet. Workers are protected from blasts. The green lift opens after every rescue.

Equipment
F increases range, B adds charge capacity, H restores one heart. Blue S opens every G gate.

Machines
Patrols follow corridors. Hunters approach you. Armoured sentries remain still and need two blasts. Avoid them or destroy them.

Pause
Escape or Pause. Leaving the tab automatically pauses. No automatic saving. Export a campaign checkpoint to keep completed missions; the current mission restarts at its beginning.

Remix
Edit a mission and export a credited JSON pack. Import never starts play. Review it, then explicitly start.