Really awesome game, super creative! I really like it!
The "multi-kills" that pieces can get break the fundamental gameplay of "normal" chess, where you try to reinforce your pieces. Like, my first game I tried to make some good pawn structures, and then my pawns all got freakin' dominated. That's not inherently a bad thing, it definitely changes the game, but it makes it very swingy. And the randomness of how the stronger pieces move can be really frustrating and inhibit strategy. I had one turn where my rook just moved himself directly into the path of the enemy bishop and that's a HUGE swing that I had no control over.
All in all though, this game was super fun to play! Amazing work!