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So yesterday I only did the bear training mastery challenge, I got a bronze as I didn't achieve all the requirements. Ok
But on the wolf challenge said : kill all guards and kill by indirect casualty or indirect kill.
The fact is I kill the vast majority of them by indirect kills,exploding jars,spreading fire,dropping nets etc. But every few seconds my counter was reset to zero. I had almost fulfilled it very soon ,then something happened and the counter was empty. I don't know if this is intended but sounds like a bug to me. Of course I only got a bronze when should have been a gold as I killed most of them indirectly.
I would appreciate an explanation in case it was something am missing?
Thank you 
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