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I have an issue. When I hit a bot or an object my spinner immediately stops without doing any damage 


You are correct.  Spinner damage has not yet been included.  The entire damage system itself is just a placeholder right now, and will be undergoing a complete rewrite over the next few months. 

We do have a quick fix for spinner damage coming out later this week which should provide a basic energy-based damage system, as well as fixing a bug which prevents spinners from knocking their target around.  Maybe by Thursday?