How much footage have we seen so far?

I have to put the kids to bed, so......... 2no almost 3 min trailers, 1no 2 min, 2 x 1 min = 10 mins + 1 min of extras? I would say 30% - 40% of the footage is repeated, some scenes appear in all traliers, so around 7 mins? So 6%ish? If this is only 6ish% of the movie (or 6% of the best bits) what haven't we seen yet? I think we can kiss goodbye to the unkown that was Alien, but hope the very best is still to be revealed in around a month........