Take the imitation of the Inferno is taken as an amusing conceit. Something to add to the amusement of the prose.
Just as an example, the second circle is populated in Dante with the carnal, not gluttons. Gluttons await us in the third circle. (At least according to Dante. I haven’t seen the video game.)
So long as it isn’t taken as your guide through Hell, no harm done I suppose.
Let me know about your experiences with it as a guide to R.