I like A and D the best, personally. With A, the camera looking up at the figure makes him feel more powerful during the lunge. Also the silhouettes are instantly readable in both. For A, the contrast between the background and the staff, then the character, is interesting. The recoil in D, like preparing for a strike, has a larger silhouette and might have potential for more detail. If I had to pick between A and D, I really like D. They all look really cool though. Great compositions.
Thanks a lot for your analyse @Motocrab!
Thanks @nesokaiyoh !