Walkthrough: Quake II - Pumping Station 1

Unit 6. Level 25. Difficulty: Hard+. All secrets. All kills. Pumping Station 1 is the first facility that needs to be activated in order to flood the Strogg power plant with toxic waste. The area consists of several rooms along a primary passageway and a system of other rooms and water canals accessible from damaged infrastructure. One of the water pipes leads to a large outdoor area, which connects to several other corridors. Source: QuakeWiki.