I'm a fan of simple little mood pieces and I think you did nail it with this, does a fantastic job of evoking the emotions you were trying to convey with very little. Pushing through that wall at the end especially felt grueling. I really like the art style, too, simple as it might be, it works to the feeling you were going for.
My only gripe: ASWD movement was tethered to the direction the character was facing rather than global up/down/left/right, which was a little difficult sometimes since it's not particularly easy to tell where the character was facing. It does sort of feel more "in" the character, though, so as a design choice I think it stands. I also wish the end character did interact with you more directly a bit. Overall though, still really enjoyed it, good work.