Yes you can. After some time, you will get a Piplup egg.
Since Empoleon is a Water and Steel type Pokemon. So Fire, Fighting, Ground Pokemons are effective when battling Empoleon.
the you put in the daycare for a darkrai egg is a ditto
Go to the daycare (located a bit beneath goldenrod city) and put in a ditto and a stage 2 Pokemon(like nidoking, empoleon, etc.) the just walk around and keep going back to the daycare, talking to the daycare man every time. at some point, he'll say your Pokemon had an egg so take it and hatch by walking around A LOT when it hatches you'll get the basic evolution of the Pokemon you put in (so if you put in nidoking you get the boy nidoran and if you put in empoleon you'll get a piplup. i hope i helped :3
Put ditto in daycare then, put the Pokemon the should be breeded (Cannot be a legendary Pokemon or ditto)
yes ditto can breed with empoleon
Put it in the daycare with a ditto.
Put a ditto and a Manaphy in the Daycare
Put them in the daycare together
a ditto
Most Pokémon, even genderless, can breed with Ditto. It turns out to be the species breeded with Ditto, but always the first evolution. So you'll get a Chimchar again, even if you put Ditto and Infernape to Daycare.
A ditto and a feraligatr
put a ditto and a charzard in the daycare