I think the idea of is cool, just creating scenes of a caveman like creating fire, fight, etc
I wonder if streamlining the controls could help - there were so many keys and mouse involved, which on one hand might be intended to express the various things you're doing, but in practice - maybe the effort should have gone elsewhere, like improving the responsivness of the controls in the fight against the killer goat.
Also the art was sort of a pixel art, but with each "pixel" having different size and gradient color, which is a little jarring. Overall it didn't look bad, but little things like not having white line above the head, can help