It's an all action issue. Glass does spend some time setting up the lengthy action sequence with a rat commander out to redeem his lost pride (during the previous volume), but not a lot. It's all distinct, because Glass is showing more of the rat culture than he's shown before–and hinting at one aspect of Templar culture never before discussed (the mice abandoning their elderly when moving camps).
Then the rats get to the Templar camp where Cassius is caring for comatose Karic and the action starts. It's vicious and lyrical, with Cassius dispatching the rats either directly or through traps. The traps often lead to more intense violence than just the sword fighting.
During the battle, Glass has Cassius narrating–some of it has to do with the battle, but a lot is self-reflection. Glass and Santos are ambitious with their concept.
The ending double twist subtly deepens the issue.
Solitaire; writer, Bryan J.L. Glass; artist, Victor Santos; colorist, Veronica Gandini; letterer, James H. Glass; editor, Judy Glass; publisher, Image Comics.