The ogre/bear/orcclaw are all behind a wall of force. Only things Tommi can attack right now is the Orog that Dandin just attacked and the archer.
The die roller hated Escella. I was disappointed that the darkness didn't slow them down more. But even with advantage, she didn't do much damage to them while in the darkness. Other than the one big hit six rounds into the combat, she was rather sad. She was similarly ineffective at the back entrance. So she has a theme.
Yeah, sadly regular darkmess doesn't do much good unless you can find a way to keep them in the area or confuse their sense of direction. Mord had some good luck with it, but that's mainly because his darkness spells eat things, and the last time he used it, somebody threw up a wall of force to keep the bad guys guessing.
Though don't forget that Warlocks do have a way to see even in magical darkness. Which I think is better for them to just cast it around themselves, or where they intend to go so they can mess with things that can't see them even though they can see just fine.