okay similar to omniscience reader but mc plays a game the same as what is happening.
humanity is teleported underground to where the cant escape and are forced to survive.
mc knowing how it goes picks the class of engineer sinse ot was the best class for late game due to the machines and robots that can be made later on in the game.
mc when he appears underground imeaditly takes out his starter starter pistol with 10 clips and goes and finds a crack in the walls where he can stay as he prepares for the cleansing witch is wave of cockroaches the size a adult witch eats what ever they can find.
mc after surviving and using siz of his clips is now level 12 and receives a random skill for reaching level ten in his class and a bounus for reaching level 10 in the first wave.
mc is sure no one else is level ten since the ranking says he is the only one and since he can hide his name he did sinse he knows humans they flock to the strong and bus out the strenghth = responsibility.
mc receives the summon turret skill for his bonus and class skill mechanic witch allows him to create things as long as he has the resources.
mc then goes on to move far away from people due to the number increasing the more people are in the same area.
so mc survives mines builds and survives as he becomes strong. because he knows the events that go down with the first being the scourge witch are ratmen. even though there only half the height of a adult they come in terrifying number with 1000 being the smallest army the travel in.
mc with his mechanic builds his fortress as he avoids meeting people.
hope you like the idea. if you do comment down below