I'm averaging a little under 1 heart per run, getting no hearts about a tenth of the time and getting 2 hearts a little less than that. Only 1 rainbow chest, with the SR bow. Very steady rate of enhance items, I've gone from 12-13k starting the event to 17.5 now, and up to the last couple runs I'd been able to level one or more weapons and one or more eidolon each run. Epigraph drops have been highly variable and mostly scarce, so I'm gaining SP slowly and doubt I'll have the epigraphs left over to get anything other than consumables after that.