Gospel of Doom: Darkin Delta

[Ding, your roommate XX has entered the doomsday world, please take him to an evacuation point as soon as possible! The protagonist, an ordinary sophomore, has his world turned upside down by a mysterious game. Ever since the game "Dark Descent Delta" appeared on the computer, his roommate disappeared mysteriously, but he found his roommate in the game, and the roommate became his character in the game. As the game progresses, the protagonist discovers that in this game, you can collect materials, exchange [Darkin Coins], purchase [Alien] equipment, kill Darkin creatures, and bring materials to reality. But some problems still gradually surfaced. Are you leaving supplies to the protagonist in the game? Or should the protagonist bring it to reality and leave it to himself? Can the protagonist lead his roommates to successfully find the escape point of the doomsday game? Or is reality a game that needs to be evacuated immediately?