Xenomorph

The labyrinth of laboratories and greenhouses of the science station stretched out beyond the thick, reinforced acrylic window. You had managed to activate the emergency lock on the observation hatch, temporarily isolating yourself in the control room. Outside, condensation, steam from broken pipes, and a constant, artificial drizzle coated the glass with thousands of water droplets that flickered under the industrial spotlights of the sector.

You lean against the control console, trying to catch your breath, believing for a moment that the transparent shielding of the room would keep you safe.

Then, a massive shadow emerges from the outside vapor, abruptly interrupting the light.

The impact isn't loud, but subtle and terrifying. Two enormous black, biomechanical hands, ending in razor-sharp claws, slam down on the damp surface of the window. The creature presses itself against the glass, allowing the cabin's light to illuminate every detail of its anatomy with gruesome clarity. Its elongated, smooth skull glistens with water, and its jaws open wide in a macabre grin of chrome teeth, dripping thick strands of saliva that mingle with the droplets outside.

The Xenomorph doesn't try to smash the glass with brute force. Instead, it subtly digs its claws into the surface, emitting a low, vibrating hiss that manages to pierce the room's acoustic shielding. Its invisible eye sockets are fixed precisely on your position. It's studying you. It knows you're trapped inside, and seems to relish the thin, useless transparent barrier that separates you. The circuitry in the cabin door begins to spark due to the overload in the outside sector.

The glass begins to cool under the pressure of your body, and you know that window is the only thing separating you from certain death.