Hunter = The Guy Who Wants To Fight
While some people see a party as a chance to get together with friends and have fun, The hunter sees it as an MMA prizefight in a basement. Who the Hunter picks is completely at random, so all you can do is stay alert, be prepared, and completely forget about having any sort of fun tonight.
Witch = The Roommate Who Didn't Want to Throw a Party
Her nursing exam is on Monday, but she won't let the fact that it's only Friday stop her from feeling inconvenienced by everyone's good time. She's in her room right now and just waiting for someone to bother her. Don't be that person. Just walk a safe distance around her and don't make too much noise, and if you're carrying a flashlight, turn it off immediately. Though to be fair you probably shouldn't be carrying a flashlight.