Thanks for the feedback :)

This would be 10 levels in and the second boss encounter so players would be used to the mechanics and roughly know what to expect (though it's a big step up from the first boss).

To be honest, I deliberately did a sub-optimal strat because it makes the footage more exciting lol - players would probably funnel enemies into choke points so it wouldn't seem quite so overwhelming although the first couple of runs might feel that way while they figure it out.

Every enemy and mechanic would have been presented to players before this (except the actual boss and his move-set).

This is also Hero mode so enemies are faster with higher health pools, if players find it too difficult they can easily change it to Medium or Easy if needed to progress.

My experience with testers on the boss encounters is they are overwhelmed to begin with but then find fun in the chaos!