This is little test level I've created for my Game Design course . I would like critique focused on the art style, character animations, level design and theme based on its current development.

Game narrative: a little robot, rejected from the factory that created them and sent to be disposed, must find a way out of the heavily guarded building complex to survive.
Edit:
I have made some changes to the fame in response to the critique. The main ones being that I fixed the attack animation and changed the platform and added an background.
Criticism is still wanted yo see if the changes I'd made are improvements.

moving= right left arrow keys
jump= spacebar
attack=mouse