this is great Xion, I have seen you making some strides and you showed in that gamemaking activity you have good ideas, I'm glad you got into animation.
your results are great too, I'm glad you got into the subpixel vibe right away. I suggest you try some one bit effects and frame redrawing now, I think you got the right basis.
now spread the word, tell everybody how fun and easy animation is
first guy has a simple action and his animation is just the right complexity for the action, no crits there.
is your second guy supposed to be biologic? I guessed so because you mention blood for a death anim, I think he looks pretty damn mechanic though. if you still want to use the more greenish highlights I'd say put them on the head/torso.
I think you should keep second guy's legs with the blueish hihglights, those are really pretty colors and you should expose them as much as you can.