User blog comment:Miskos3/Fairy Tail Episode 256: Tartaros arc: The Final Duels, Review/@comment-84.151.152.142-20151025175835/@comment-84.151.157.10-20151027083021

The Six Guards (not Lunar and Hardner) are killed off:

Chien by Let

Koala by Lucia

Reevil by Haru

Leopard by Girafe

Girafe by Hamrio Musica

Requin by Julia

(Though some of them aren't sure, similar to Tartaros)