A concrete basement laid out as a shooting floor. Whitewashed walls, cracked concrete ceiling with fluorescent strip lights, cinderblock partitions splitting the space into lanes, and two kinds of flooring that mark out the halves: cracked pale slabs on one side, a pink and white chequerboard on the other. Wooden crates stencilled with radiation trefoils stand along the walls, a steel ladder climbs to a hatch cut high in a partition, and one frame shows rifles and pistols laid out in neat rows straight on the tiles, ready to be picked up. There is no daylight anywhere.

The level measures 2000 × 2082 × 448 map units and is built from 2,757 faces and 18 textures, none of them embedded, which is why the archive ships two of the .wad files it was compiled against. Nine spawns per side take 18 players. There are no bomb sites, hostages or rescue zones, but the map does define its own buy zones for both teams. The floor loot is the point: eight M4A1s, eight AK-47s, eight Scouts, four AWPs, four P90s, four M3s, four XM1014s, two TMPs, two M249s, twenty HE grenades and a flashbang. Three doors and two ladders are the only moving parts.