Subsurface Resonator is one of the second new build-able on this map (Black Ops 2 Zombies). This machine is like a sound wave that kill in second. Unfortunately, this machine need to have a power to be used ( need turbine to power up this machine ). Four parts to be collected ( Motor, Base, Fan and Speaker ) and all can be found on General Store.
Head Chopper is one of the new build-able on this map (Black Ops 2 Zombies). This machine still need a turbine to be use. Parts located on General Store where we get those two previous and contains four to be collected. Handle, Gear, Blade and Body.
Tip : If you don’t want to go back and forth just to find the parts and build on working table, let the giant free ( Leroy ). Then go on the candy shop and look for a free candy ( Free candy spawn every round ). Once you have a candy, find a working table and wait for him. If you want to build of what exactly you want, get just one part and build it on the working table then give the candy to him and he will do the rest for you.