I played this for a stream, and really enjoyed it, even though the difficulty ramps up a bit drastically for some of the enemies (Spy specifically likes to spawn a LOT on round 3 and 4),
I saw on a video of the game that it's supposed to just spawn me back when I get caught, but I get spawned, and can't see anything still as the black screen just stays permanently. I suspect this is most likely a bug tho!
Edit: I actually beat round 4 and finished the game, never really saw what pyro did, round 3 and 4 were both heavy(?), however I did manage to encounter a guy in a trenchcoat that just walked into me and hit me, and a rose that spawned around the map randomly. Not too sure what those were about, despite spending several minutes trying to clip out of bounds/hunt for secrets