1. Don't kill Hitler 2. Don't kill Mark 3. Kill Mark 4. Fuck you Derek 5. Derek doesn't exist 6. Don't go back in time and stop Derek's parents from meeting each other 7. Don't go back in time and have sex with Derek's mom so it turns out you're his actual dad 8. Nobody tell Derek who his real father is 9. Don't go back in time just to draw a dick on Mark's…