I use no-intro set too, but some games don't work (see my user page). All my achievements are done in recalbox (hardcore mode): http://retroachievements.org/user/DSkywalk I fixed another fceu core: https://github.com/libretro/fceu-next/commits/master I'm waiting for this 4.1x release!! Thank you!!!
I add today hardcore mode feature on retroarch 
https://github.com/libretro/RetroArch/pull/2790 Would be added to beta2? Thanks again
Hello This night was too long, I code some patches to allow picodrive get Achievements: https://github.com/libretro/picodrive/pull/22 Also I port this fix to fceumm but still need some work on retroarch core: https://github.com/libretro/libretro-fceumm/pull/37 Enjoy!! Update: Added patched cores (.so) to this topic... so just install in your recalbox sd and protif 