Yeah above the waistline is very nicely done! Just keep playing around with his legs an Im sure you'll get it down! even just a frame of the legs crossing would make a huge difference, at the moment there isnt a frame where his legs intersect eachother so it looks weird. I did a bad edit cause I spent 2 minutes on it but you can see here and it kinda helps the animation out. Good luck, love the style otherwise!

Yeah, that's about the same as the other critique I've received. I think it's slightly covered up by the limp being "due to the heavy sack on his back", but in any other instance it wouldn't work out. I'm pretty happy with everything above waistline, though, even with the bag moving a little erratically. Thanks for the tips! 

You could use a few more tween frames but the biggest thing is that there is no lifting leg action or very little. Its almost like hes limping while attempting to run away.