I think your test needs more physics and you need to improve the walking.
The test with Randomes`s test: 1.Walking was like shitty and try to watch Biosoldier`s tutorial cuz that walking will fit to this sprites and your style.
2. Pistol recoil was little bit shitty you need to improve that. (and try to practice madchine guns first)
3.The hand was moving at one line only it needs to move up and down and will look more smoother
Test with Bio`s sprites: 1. When he Aims the hand is too near to the head and it is funny and stupid
2.The walking weren`t too god but were better than previous one the move too fast and it is not too smooth.
3. pistol shooting was the same but when he was shooting the foots were moving too bad.
4.And fallings need more smoothness and physics.
5.And when he finishes shooting he moves back really bad.
So ok i should not be angry on you cuz you didn`t let me in collab.
But if i think that i`m not bad and i can do something right. I have made my walking style i have the pistol recoiling styles and such.
But i`m not the best and not the worse.
So if you look at my critics it is not meaning of that you suck no i need you to improve this would look better and smoother.
-Good luck on your project and collab.
Alphaman
Good luck!