Assault on the Control Room - Insane Challenge addon

The covenants tried their very best to guard & protect the control room but yet they failed horribly. This time, they have gathered and decided to bring in more units in order to stop the cyborg (Chief) from entering the control room again. Covenants are asking you once again to return to the Assault on the Control Room and take on their prepared mad entertaining skills. I have made this map of 24-30 hours of modification to make this SP map a real time challenging. Couple of extra AIs, modified marines, modified human & covenant particles. I've placed some marines on the last part for a extra backup, however, they will keep spawning until you win. :)