Thanks very much! I've download the assets and not sure the order of the frames in the sprite sheets. Is it possible to provide this information?
The pngs are from this open source game Duelyst. I did not work on Duelyst I merely ported the animations to the Unity animation file format. You can import this package into unity and look at the cut up sprite sheets in engine. If you want the animation data you'll have to read it from the .plist files from the github repo.