Currently the Paragon Assets only have sound cues for voice lines. There are no sounds included for any attacks or abilities. I think this is a huge missing piece from the release of these assets and will likely hold back attempts by the community to resurrect Paragon. I hope that Epic Games will release these assets in the future.
I did find that Rocket Mania on YouTube has a project that has many of the sound FX from Paragon. I would love to know where the assets can be obtained. Here is a link to the channel that shows the working sound FX https://www.youtube.com/watch?v=C88JHvye2FQ&t=154s.
About the sound files he happens to get them on paragon itself and extract it. It was an illegal move but he got it anyway if you still have paragon installed in your pc maybe you could do the same. But I wouldn’t advice you doing it