Below contains spoilers of what may be supposedly the ending 'cliffhanger' for Halo 4 and the main antagonist. I am a bit skeptical this is the ending but this document has been spotted in the new Vidoc, this however is the full script. Turn back now if you don't want any potential spoilers.
Read below fore more details
By: Tom Ivan
Halo 4's ending may have been revealed, according to reports.
Segments of what could be a legitimate Halo 4 script originating from a new video documentary have been published online.
But that shouldn't stop you averting your eyes now if you want to avoid potential spoilers:
"In that case, you won't mind..." Cortana appears behind the Didact.
at all of the Cortanas emerging from the Bridge
"Compassion for mankind is misplaced." - Didact
"I'm not doing this for mankind." Chief then charges the Didact.
rushes towards Didact and jumps all over him (legs, arms, chest, back)
Several takes of "Cortana" tackling and climbing on random objects at full speed.
Didact is attacked by Cortana. He attempts to swat at Cortana as a means of self defence.
Didact unclenches his fist and drops Chief.
Cortana begins restraining Didact by constraining his limbs to the Bridge.
-Several takes of "Cortana" climbing on "Didact" actor and then...
a specific body part (head, back, waist, knees, ebows, shoulders)
-Didact struggle idle.
Chief is released
-Chief immobilised pose
-Chief falls, lands on edge
-Chief hanging idle