This guided game is played solo, with the Scout, the hero card shown in the rulebook.
As the rulebook advises for a first game, you play without Objective cards: the goal is simply to survive and escape.
Room and enemy cards aren't described in the rulebook. The ones in this tutorial (Armory, Engine Room, Lurker) are made up for the example; yours will have their own texts. The rules, though, are the rulebook's.