This is simple example of lua mod for black ops 2 zombies.

WARNING: This mod is fully made with FREE ai which mean its not the best it could be. For example GSC -> LUA is done with setclientdvar which i would not recommend in this case.

Build mod for testing: https://www.mediafire.com/file/rbc33r9k9nhsuzu/zm_lua_testing_build.zip/file

Source code for Dev's: https://www.mediafire.com/file/73uztef8zgd33qs/zm_lua_testing_source.zip/file

BUILDING THE MOD YOURSELF REQUIRE OPEN ASSET TOOLS:
https://github.com/Laupetin/OpenAssetTools/releases

Incase you interested of doing your own lua mods here is link to black ops 2 lua dump: https://www.mediafire.com/file/myr9q68kb0q1jq5/black_ops_2_decompiled_lua_dump.zip/file

Keep in mind decompiled lua files are not always perfect and might contain errors.