The game would be able follow the same events because the Magical Hamster would be able to perform every task Kat does in the game, except for the Vorgil x Kat thing that honestly doesn't matter and it sounds like a bad romance out of a 12 year old fanfic. Viewers would be able to sympathize with the hamster because he wouldn't be as whiny as Kat and he's actually cute, people would actually be interested in seeing Donte saving the hamster, the hamster is a better motivation than Kat.
Some changes: -Donte: we have to save him! Vorgil: HE'S A FRIGGING HAMSTER. Donte: No, he's a magical hamster, one that helped you more than any other human being ever did. Vorgil: I guess... you're right.
-Instead of Squirrel semen for the magic you'd have hamster semen, when asked where he got it he just blushes.
The hamster would sove the problem of the game being generally received as "forced and edgy" and it would add a new fresh layer of humor to the game making it more enjoyable by the overall audience.