Thanks everyone :D I hope the actual gameplay don't disapoint you guys... in fact, I think I should post more about the gameplay to get some feedback, well, I'll do that soon.

wwow that gameplay footage looks great, good attention to detail and movement in the environment!
The only thing that really stood out that I want to give feedback on is the jump animation (or lack of one?). I felt like the body can benefit from being kind of exaggerated squash and stretchy, to give it a feeling of momentum/weight/whatever, but overall just a bit more character in that little guy and his spacesuit.
I'm not suggesting changing the jump height and speed, maybe experiment with some animation frames getting stretched at the start to trick the eye, maybe arching his back inward and stuff when reaching the apex i dunno.
I know it isn't exactly something you see often in the smaller character sprites, but something tells me it could go well with the look you've got right now.
Well, you got a point in there. And thinking about what you said I decided to try a new animation style. Here it is:

It's not the jump animation yet but I believe that it shows the idea. Thanks a lot for the advice!

Are you getting any closer to releasing a demo we can try?
I think I can do a small tech demo, alpha or something like that soon!

But an actual almost-complete-demo is probably pointless

since the game is very short...