Biblical references to evil can take two forms (actually more but I'm using two to state my point). The path to hell marked with good intentions. The state of the knowingly sinful. Good intentions are the lures of doing something so that the end is met. The little temptations or idle omissions creating sin.
ON the other hand you have very sordid, squalid and VILE images that are painted so well in christian minds. The state of the pagans worshipping strange gods in the moonlight with blood drenching their pale skin. Or the homosexual and murderous cities of Sodom and Gomorrah.
I think the Vileness of Evil is well understood by all who look at evil. Yes, the realities of most 'sin' committed is that it is not done with gross results or in a disgusting manner. But, to say that Vile Evil does not represent Religious ideology of evil is perfectly false. Religious people will often associate evil with gross and sleazy and disgusting things (such as cannabolism, murder, rape, orgies, reverting to animal instincts or nature, etc...).
You could always focus on the small things that leads characters toward evil, but I don't think when they get kicked out of their order for Gluttony or Lust will they really be enjoying their Gaming experience.
Anyways...