Great little experience! honestly that's the whole review, you made something in perfect scope and competently. Any critique would be that i wish there was more animation of the character stepping, the 2 frames for each form made it a little hard to understand what we became, and the step down anim early looks a little stilted.
The animation on the stairs is great! and the environment is really well done! like i said, stop reading after the first line of this review, because that's the long and short of it, you did great c: