realy i kild like 4black cats non of them droped a page i got 9 before but now i dont get any also whats with you can only complete it once i had thes day only to farm and now i cant thanks
edit: i know that predtermend cats dont drop a thing but im prety sure 2 of them werent predtermend
As long as you don't take the elevator on the 3rd depth you can keep replaying the event mission. You won't get heat/minerals and the prestige/4 tokens, though.
That being said, you are better of doing the first depths of Weight of Darkness (d19 poison keep) or It Came from below/Alone in the Dark (d24 shock keep). Just run across the map, kill any bk-s you find and if you get to the end reload and repeat. Anyone who is at the rank required can access it and play it as much they want.
Weight of Darkness is the place to go for farming kats.
it's easy, safe, has a lot of kats.
Kats at the end of the prestige mission (final room, in the nest) do not drop pages. This is because two black kat spawns are predetermined in that room.
However for some reason, if a black kat spawns naturally in that area, they also do not drop any pages. This is a bug that's been around for a while.