I think there were 45 minutes of good film.
The battle was PJ stereotyped: a messy, choppy, interminably long sequence constructed almost entirely from unattractive CGI, in which absurd climax follows absurd climax with the result that the whole thing quickly became irredeemably boring.
All the CGI armies look rubbish. They are far too uniform, and it was a lazy and unhelpful decision to make the Dwarf and Orc armies look almost identical. Why does everyone in Middle Earth fight with an eighteen foot pike? It doesn't even make sense for creatures that inhabit caves and tunnels.
Sad to say that Billy Connolly's spoken dialogue was almost as bad as the CGI that enveloped his physical performance. That character fell completely flat.
Beorn and Radagast the parachute troops. Give me strength.
Alfrid...was this kid PJ's nephew or something? Why couldn't he just get off the ducking screen?
Why does it hurt so much?
Because it's real!
On the upside, all of Martin Freeman's moments were fine, and his performance was great. Richard Armitage seemed to do his best.
More to follow as I remember further indignities, with a cold sweat.