Finally got a game in with a big group (6 first time players) and it quickly descended into 'introduce character and describe how I stabbed them' in four near-consecutive beats. Very little extraneous to the core mission of killing the fisherman. The whole thing took maybe four minutes. I'd call it a success though, everyone had a look of panic or amusement on their face the entire time. It'd be interesting, and I hope to test this out, to see if the same group of players start getting long winded or complicating each other's play on repeated exposure now that they're at least passing familiar with the game...
Oh no! That's the first documented Fishblade speedrun!
I think I may have made the 'Ending Fishblade' penalty a little too severe. A friendlier version might be that if a player stops talking for longer than 3 seconds, they can't narrate again until Fishblade moves on to the next target. Fishblade is only defeated if all players cannot currently narrate.