I had a lot of fun with it! The controls felt a little floaty, although given the setting I guess that's kind of appropriate, haha. The wall jumping actually felt weirdly satisfying. I had a lot of fun with that.
I don't think I ran into any bugs, but I did get to the top of the big area in level 2 and I had no idea where to go. It took me a while to figure out that I was supposed to jump down and that's where the boss was. So that could maybe be a bit better telegraphed. Also, I'm curious, was there anything inside that box that was on top of that mountain? I saw an opening but couldn't get inside of it because of the spikes.
The trash giving smoke was actually a really interesting idea. As you clean it up the level visually gets clearer, which I thought was really neat. It was a little short on the fish, though. I liked the tuna taxi, but otherwise that was the only fish I saw in the game, I believe.