Q - Why don't the animations work??
A - This mod is very fragile, or in other words, it conflicts with everything that involves animations. Sometimes it just doesn't work at all.

Q - Why are the walking animations weird?
A - The walking animations are weird because this is just a simple port, in the original mod, which was for HL2, the person did not have the walking animations.

Q - The walking animations need to be fixed!
A - Yes, they do have spasms here and there, but mind this mod originally being for HL2. This is just a simple port from game banana.

I understand your frustration, and trust me, I have the same problems. I hope we can get some good modders to port and work on this mod.

UPDATE: This mod does not work. I've tried using it bare bones, no other mods, it just doesn't work. Don't even bother until someone fixes it.