Pick Axe: A must have. It can help you clear rubble to a possible escape, be used for climbing to safety and can fight off cave zombies. Those guys are no joke.
If you or someone that you know is a product instruction fail, let me know in the comments and I will do what I can to get them the help they need. Together, we'll turn production instruction fails into product instruction successes.
Gregory IX (ruled 1227-1241) a.k.a. Pope Jew-Hating Cat-Killing Plague-Causing Inquisitor