You have this following the table:

As of patch 2.2, the following trials and raids will count toward achievements requiring the completion of high-level duties with a full party:

The Howling Eye (Extreme) / The Navel (Extreme) / The Bowl of Embers (Extreme) / The Whorl Eater (Extreme) / Thornmarch (Extreme) / The Binding Coil of Bahamut (excluding Turn 3) / The Second Coil of Bahamut

So not only do this mean lots of tanking, but actual end-game raid tanking.