There are two parts to this role.

The first part is to read some lines that introduce specific rooms or read out descriptions, as if you were a game master/narrator or a roleplaying game or narrating a fairy tale. This is audition line 2. Your voice should fit the situation, as if you were reading an audiobook, it shouldn't be dispassionate. In the audition line, evoke a sense of wonder.

The second part is to narrate the longer-form text at the beginning and end of some chapters. Here, you still want the emotion in your voice to relate to the text you're presenting.

An important part in each case is to show emotion while maintaining both decorum and a certain brisk pace. We don't want to force the player to wait too long until the narrator finishes, especially since in some cases your voice will accompany video and the player will not be able to skip through individual lines. But don't rush, either. An ideal submission would be fast, but still sound natural.

5 lines, plus 8 multi-paragraph narration sequences, total compensation $130.