Extremely shakey and horrible easing- if any. Head on down to the tutorial section and look at some basics. Easing and smoothing is the basis for any good looking animation, you could have a guy spazzing out in mid-air but as long as it's smooth, it's sexy.
With your scythe animation- you have to remember that it's a heavy scythe. its centre of gravity is away from your stick. Raising it's gonna be slow, it'll start to get faster over your head and then it'll slam down infront of you. Swinging something THAT large like how you animated it means that you just broke a few rules of gravity, son. And the end of that flip- does he just go *poof*, teleporting from being in the air to both feet on the ground? one foot lands first- even if there's just a few frames inbetween, it'll look more realistic. And if he's gonna land, remember his weight. he's gonna shift downards further than that unless he's made of feathers and clouds.
The second animation- goddamn, that run. No. When someone runs, they thrust themselves forward, they don't act like michael. j. fox in a hurricane. That's something you should definately look up a tutorial on.
Low beginner overall. You got a ways to go, matey.
