In Zombieland (2009) the character Columbus recants several 'rules of survival'. Whilst this list is described as having 33 entries, only a fraction are described on-screen although the list was expanded in later promotional videos.
The Rules[]
1. Cardio
"The first rule of Zombieland: Cardio. When the zombie outbreak first hit, the first to go, for obvious reasons... were the fatties."
2. Double Tap
3 Beware of Bathrooms
4 Seatbelts
6 Cast Iron Skillet
7 Travel Light
8 Get a Kickass Partner
12 Bounty Paper Towels
15 Bowling Ball
17 Don't Be a Hero. (Columbus changes the rule to "Be a hero" at the amusement park, facing his greatest fear, a clown-zombie, to save Wichita and Little Rock.)
18 Limber Up
21 Avoid Strip Clubs
22 When In Doubt, Know Your Way Out
29 The Buddy System
31 Check the Back Seat
32 Enjoy the Little Things
33 Swiss Army Knife
34 Clean Socks
48 Hygiene
49 Always Have Backup