A really cool game, shame to hear about the audio issues, as fun as this was that I played it all the way through I was slowly going insane playing in complete silence.
The level design was really nice, puzzles felt well thought out. Showing in the first level that he eats hay, then using it in the second level so he steps on a button and then again when you get the moveable hay stack. All great stuff.
I love the cow so much, just adding touches like him moving around on his own gives him so much personality.
I imagine there was a sound cue for collecting the blue tokens but I didn't realize they were anything until I finished the first level. I think either having them disappear on collection or maybe greyed out would be a good idea.
Nice work.