I did this animation exercise during my enrollment at AnimSchool, Body Acting class. It was instructed by Jean-Luc Delhougne. We were asked to propose three ideas along with their story thumbnails. The following concept was chosen for its highest clarity within the given approximate time limit.
I created the scene by combining some CC-licensed assets (credits) together with the ones I modeled in Maya and Blender (background weapons). Following is an inspiration board I prepared for the Batman action poses, props, set design, etc:
Here is the progression from the initial blocking to spline passes and the final result: