Im experiencing similar issue, I have 57/60 of the chess pieces available. The remaining 3 are from Path of Resolve orb drops. I’m on Path of Resolve and I haven’t seen the orbs drop from any activity enemy to even get the chance at the 3 chess pieces. I think there’s a bug where orbs are simply not dropping on the respective paths. I’ve got Path of Ambition done but the orbs were dropping like candy just like before the chess pieces were even introduced. Help would be greatly appreciated but I think it’s a bug amongst many at the moment. Just gotta wait for fix or auto completion.