I hated that single player game.
The AI for the allied teammates sucked period
The enemies have insane accuracy with machine guns, a lot better than what I could get with it. They'd nail me in head 5+ times in a row and I couldnt stop them because my aim was getting knocked out
My teammates usually died because they fuckin stood out in middle of road for no reason even though I was inside the building . By the time I reached the church all my teammates died, even though I gave them a lot of cover fire and ruined my accuracy rating over that. And I thought the enemies AI just plain sucked, like they would shoot once and just stand there for a while. If i wanted it to be more fast paced I'd off turned down their accuracy and pumped up the rate of fire for them