Just got done with the campaign on heroic.
Having recently played through all of them, this was definitely one of the weakest entries in the franchise, maybe worse than 2.
Fighting the prometheans wasn't nearly as interesting as fighting the covenants, and to be honest I fought the 3 same enemies so much in this game I hope they just dump them for the next games. Knights being such bullet sponges didn't help. In terms of level design this also seemed way more linear than past campaigns, and I got sick of the Tron Legacy structures halfway through. Didact looked straight out of a Warcraft game, and overall the story was pretty generic
Better luck next time, I guess.