Halo nightfall is so awesome.
Hmm well. But all real life trailer for an Halo game are so many better than Halo nightfall or Halo 4 Forward unto Dawn for an example the Halo landfall trailer from Halo 3 or the legendary We are ODST trailer from Halo 3 ODST. I wish they make a movie like this Trailer
https://www.youtube.com/watch?v=SyOAdrxlPVs
https://www.youtube.com/watch?v=wjamhIPVvnI
To be honest, I think the other live-action ones are better. Landfall had the best action. ODST is a close second, but the action didn't last long enough. Deliver Hope was great too. Even the "War of the Wits" Halo Wars 2 live action comedy trailers are really good.

Hopefully Neill Blomkamp agrees to do a Halo movie at some point.