Leonard Churchill was rather indifferent about it all.
Once finished, the thirty of them began to filter into the twisted light gate.
....
The surroundings changed abruptly, and they found themselves in a dimly lit corridor.
Enlightenment also appeared at the same time.
"You have entered the '1981 Titan Mechanical Research Institute'"
"Current disaster level: C"
"Mortality rate for this difficulty: 37.5%"
"Space Exploration Progress: 39.1%"
"Keyword: Squad Peace Mode"
"Clue: For some unknown reason, pollution leaked from the city's secret underground laboratory, causing tens of thousands of humans in several nearby city blocks to mutate into monsters"
"Current Mission: You and your teammates are investigators sent to investigate the laboratory accident. You need to close the first-floor exit of the laboratory to prevent further pollution leakage; killing monsters will earn you extra reward at settlement"