I had not watched X-Files much but my wife said that characters were portrayed well by the actors. She did not care much for the Girl-on-Girl scenes or the extremely sloppy BJ in the group scene. We did like the ending sex scene the most. Hopefully, Part 2 is just as good.
The wife and I prefer movies that have a plot (including parodies) which include sex scenes that are relevant to the plot. This movie was okay but had a few sex scenes that we thought were not relevant.