The gameplay is good, but there are a few thing you could easily do to improve the overall gameplay of the game:
1. I don't think that paralax is needed here.
2. Powerups are pretty generic and lifeless. Sometimes is hard to see where the clocks are. And if they appear outside the screen, you can't know about it. They should be larger and animated, probably glowing as well. They also should indicate better when they will disappear.
3. The cat should be bigger.
4. You could change what attacks the cat to make more sense, maybe some dogs or even granny:)
5. Instead of just platforms, you could use some garbage cans, tires and such...
What i like about the game:
1. The background is pretty cool.
2. The music cool as well.