Had an entertaining time with this. My character was a worker at a factory and the rival was a supervisor who was a mentor. After facing a lady who had a crush on my rival and then a hired hand, I had a showdown with the rival. Turns out my experience was real, and the drugs in my system wasn't fooling me. Sadly, the cards were against me and my mentor gunned me down.
Lots of great ideas here, though it did take a bit to understand the duel system. The two black suit icons could also be a tad larger; spade and clubs are hard to distinguish for old eyes! For a one pager, there's a lot of terminology going on, from Composure Stacks to Fate Shields and so on.