I gave this a quick read (Dec 04,2024 version), it definitely needs some formatting to be easier to understand.
From the description I thought the point was that this would help players describe battles instead it's basically a simple combat system and you get extra dice for describing your attacks or taking a risk.
This mimics things like Exalted's combat system where you can do a "stunt" to get bonuses, which is effectively just a description of your action which
the storyteller gets to judge on a 1-3 (the value of the bonus the description is worth) scale.
Sadly there is no help or direction on what makes a good description in the
author's opinion.
This system also talks about the GM being able to add weaknesses to dice
types, but what these do or how players are supposed to engage with them
is not explained. Again from the description I had the impression that
looking for these weaknesses was a bigger part of 'Pure Massacre'.
What I thought this project would be is of course purely subjective to
myself but I do think in any case this needs more work to be usable and stand out from similar attempts to reward better narration of
combat scenarios.
Holding my thumbs for the author, would totally be willing to give it
another read if it got an update.