I like the background, menu is cool. but really it seams like its a very basic start to the game,no enemy's(assuming there are any) and there inst really a point, its kinda hard to critique.
the animations are simple but thats fine, i like how it looks.
You're totally right about it being very basic, but what it have so far I think it's been well done, like the jump-through moving platforms, the gliding and all that stuff.
Also the menu, the multilanguage option, and the fact that it checks for you monitor aspect ratio when you set it to fullscreen and it adds bars if it's different than 16:9.
The animations are also incomplete, look for example at the climbing animation, that's the only one that has been completed and has more frames than the others.
So, there you have a bunch of stuff to critique, even if the gameplay is practically non-existant so far.