Awesome game, love the concept and style, much more fun and better pacing than other battlers like autochess/ the bazaar.
Unfortunately, I got the game state into soft-lock!
Sentinel only triggers on taking damage, enemy doesn't deal any, no battle resolution! 
the Fast Forward button did appear, however it didn't end the battle!
minor(unluck) issue, but overall a great game! can't wait for release :3
I returned to the tab after a couple minutes of writing this comment and it let me move on with a battle failed message, so it seems y'all thought of many eventualities, great work.
(now this feedback is super nitpicky!)
Some indication that the battle has a fail-safe would be nice, it seemed to take long enough that most people would've given up and restarted their run.