Yes, the hacks are still working and undetected. Godmode = you cant be killed from any damage(bullet/nade or falling from a high place).

Limited time means they might get fixed by activision so they are not permanent features. When this happens I will remove them from the features list, so if you are still seeing these features, it means they are still working. I personally dont think these features will be patched anytime soon since our site is the only one that offers them atm(!).