It looks really good, very lively, but I think it'd look even better if you added some smears as he throws the hammer down (see for example: http://i.imgur.com/FhuNQXC.png )

It's simple, rough-ish on the edges (probably the irregular dithering), but I really really like it. It oozes atmosphere, very inspiring.

I love it! Very nice curves and animation :) Maybe a little choppy, just to nitpick.

It's cool :)

The first thing that came to mind though is the texture or the scythe - it's very irregular, when a scythe (at least I think so!) should be a very refined piece of metal, with elegant curves.

Oh yeah I see what you mean. The base idea is correct, yet I still think in execution it's not quite there - why would thicker areas be on the edges of the slime, instead of the center, for instance?

It's fine! A few remarks though:

You abused a little on dithering, it's too visible.

You shaded the tower as if it were a cylinder, when it's actually a square. It should not change color while still on the same face.

I dig it! The tileset looks nice. However the dragon as well as the rings look very flat in comparison and could use a little bit more shading. :)

Haha, fun idea! On the other hand, that's very close to pillow shading and it looks kinda awkward.

The humans look more like zombies tbh. Perhaps avoid using black outside of the global outline, it's too contrasted with the face color.

Also using antialiasing on the global outline is a little weird, especially since it's black. Again, it is so contrasted here it would look better without AA, to clearly separate the sprite from the background.

I hope it makes sense. Otherwise the base line looks fine. :)

Years later... I'm finally on pixeljoint.

You misspelled my name btw.

There is no way to tell without seeing the game in question. But regardless, since this piece is posted alone, it probably needs to be lighter.

I guess it's meant this way, but it looks way too dark imo. We could appreciate more details with more contrast.

This is so comfy. Love it!

I'm only good at seeing when it looks awkward, but I'm not a great artist myself, so I wouldn't know, sorry. :(

Just keep browsing the gallery, you will find tons of great examples and inspirations.

The dithering is quite awkward here, abused a little. It adds a lot of unwanted texture.

Neat! I'd remove the palette though, if you want to show it put it in the description :)

Add some colors to your palette. Grayscale only gets you so far. There are a bunch of tutorials floating out there.

Woah I like it. Simple yet effective.

Woah that looks pretty unique! Technically simple but I dig it.

Neat! The facial features do look a little off though, maybe the outline is too visible.

Looking good! The outline is a little weird though. Too much contrast with its colors, and weirdly placed too.

This is awesome! The animation does look a little choppy though, could use more frames or faster speed imo.

I think it looks too obviously mirrored. Besides the symmetrical shading, the middle line where the symmetry axis is is two pixels wide and is really noticeable imo.

Otherwise it's a fantastic piece.

I feel like the dithering here adds a lot of unwanted texture to the body and hair.

Your outline is very awkward at spots.

http://i.imgur.com/kYlGjsr.png

Otherwise the overall shape is okay.