sci-fi environment, Doom 3, space station, Mars base, futuristic lockers, numeric keypads, glowing red lights, dark corridors, eerie atmosphere, emergency lighting, metallic textures, rusted surfaces, locker codes written on sticky notes, scattered papers, PDA device with access codes, first-person perspective, dimly lit, high contrast shadows, suspenseful mood, detailed textures, immersive 3D composition, atmospheric fog, advanced technology props, security cameras, abandoned research facility, desolate vibe, survival horror theme.