I need help hooking into 2 plugins to form 1

okay so i am trying to create this plugin but i have not completely worked my way around the minecraft classes. i need these plugins to work together in adding a Scoreboard/leaderboard and Points with guns to the game.
this is the guns plugin: http://dev.bukkit.org/bukkit-plugins/crackshot/
and this is the zombie survival plugin: http://dev.bukkit.org/bukkit-plugins/zo ... l-interest

if you have questions just comment or PM me thank you all