Just had a session of playing this mini delve -- lots of fun!

The campaign description states that the delve will take 1-2 hours, but our own took about 3 hours. The players seemed to really get invested in the world and got all curious as to why the crystals were cloudy, what the altar was for, what the pit was for, etc. The end part of the campaign (when all the spiders had been taken care of and Kurisha was appeased) ended up being a feud between the player who wanted to sneak the flumphs away and use them to clear the crystals, and the player who had fallen in love with the creatures and wanted no harm done to them! Eventually it was agreed that the party take on the crystals withut flumph aid, and managed to control the situation and get the crystals they came for.

I really underestimated this little dungeon. I thought it'd be a fun little diversion, but the players resonated with it very well. I'll definitely be giving them the other free campaigns soon, as well as picking up any new mini delves on release. Fantastic!