Terrible 1997 level, but with okrutny polski humor like nothing else.

Many unique features. Visually different, with intentionally strange lighting and plenty of messages on the walls. The indoor layout includes corridors with dead ends and right angles in random places. Doors often have to be shot to open for no obvious reason (although one provides a breaking glass to escape effect that has probably never been used since) and a false exit that actually tells one to type "kill" in the console. Most notably, an extremely dark and cramped sewer system full of fish takes up half of the level. After this has made the player passionately hate sewers, the exit (which requires rocket jumping to reach, nearly 17 years before digs07) loads E4M1.