Happy new year! I've been working on this mod again, and I've got some big things done, including:
1) Improved the map of the New York streets I've been making.
2) Scripted a system for progressive waves of zombies, increasing in speed and difficulty as you go.
3) Removed the standard tango voices from the zombies. They used to speak like regular terrorists. It was pretty funny to hear "Hello?" in a Spanish accent coming from a zombie, but broke the mood, so now it's gone!
4) Working on balancing the difficulty of the waves as well as smoothing out the appearance of the zombies' motions.
EDIT: January 6: The mod can now run not only the maps specifically designed for it, but also run in standard maps as well!
EDIT: January 7: Added powerups. There are two types, and every map will have two of each spawned in random locations. Each powerup can be used only once. There's an ammo refill which replenishes whatever gun you have out. And there's a zombie nuke which blows up every living zombie in the map.
Also, single player menus and gameplay code is 99% finished.
i knew it was a good idea to follow this mod :3 raimbow six ain't dead X3