the last bit made me laugh, he’s so nonchalant about it.

you need to HARNESS THE POWER of onion skinning. (that’s the transparent previous frame) if you can make sure the feet stay firmly in place when walking, they’ll look more natural. also for walking/running, use 3 to 4 frames, frame 1 for left leg forward and right leg back, frame 2 for left leg straight down and right leg bent and frame 3 for right leg forward and left leg back. practice this and you’ll improve on walking animation.

a few minor tips are:
1) use more advanced figs rather than base figs or Scarf Figs, try something like the stuff i made.
2) that bullet would’ve killed him the second he touched the wire, maybe use a knife or sword next time.
3) maybe do more animation on bits where the dude needs to overcome an obstacle like ‘jumping a gap’ or ‘opening a locked door’, it makes your animations more interesting.

if none of that made sense, at least just remember this one thing: Plot, Characters and Creativity come first, then have a fight scene.