I just completed the single player portion of Red Dead Redemption but I am only around 95% complete. I have two Rank 10 tasks to complete (disarm 6 people with no reloads and kill the legendary bears - I've done one bear and the wolf already) but that doesn't seem enough to get 5%. So, what else is there?
I presume some of the achievements lead towards 100% completion (such as breaking all the kinds of horses), but do I need ALL the achievements or is there a subset that must be achieved before I can get 100%?
What else might I be missing? Are there any common tasks that people miss when playing Red Dead Redemption (like an obscure stranger mission or gang hideout)?