3D Animation: Ladder climbing

It's a simple animation loop for humanoid characters.

I thought a good idea would be to let the character pause its movement between frames in the animation. It proved not to be the easiest of things to implement into a game. (Original version). I tried to fix a couple of issues (v1.1) but didn't get the result I wanted. The last version (v1.2) has constant movement in the up direction, without having to stop moving the object between animation frames. I would recommend using version 1.2. It's a lot easier to work with than the other two.

Animations
Animated in place
Loopable: Yes
Bind pose: frame 0
Animation: frame 1 to 50

Animation 1.0
Stop between frame 15 - 20 and 45 - 50

Animation 1.1
Stop between frame 1 - 6 and 25 - 31

Animation 1.2
The character using this animation can move in a constant speed, does not need to stop for the animation to keep up.

Note: 3D Models not included!
(Except for the ladder mockup)